Program
Operating systems
License
Costs
Protocols
Codecs
Encryption
Max conference peers
Other abilities
Latest release
AudioCodes MobilityPLUS
Windows , Android , iOS
Proprietary
?
SIP , RTP , XMPP , STUN , ICE
G.722 wideband, G.711a , G.711u , iLBC , G.729a , SILK , GSM , VP8, H.264 , Opus
TLS , SRTP
Unknown
Voice, video, IM, Group chat, content sharing, SMS and MMS over IP services, native and social network contacts integration, incoming call/IM push notifications.
2014; 10 years ago (2014 )
Avaya Application Server 5300 Soft Client
Windows
Proprietary
?
SIP , RTP
Unknown
TLS , SRTP
Unknown
2.0; 2010; 14 years ago (2010 )
Blink
Linux , macOS , Windows
Mixed: free software versions under GNU GPLv3 + shareware versions under gplv3 with exception of including proprietary code
macOS version proprietary on App Store, free version limited to sponsored SIP provider; Windows version proprietary; Linux version open source
ICE , SIP , MSRP , RFB (VNC) , XCAP
Opus , speex , G.722 , GSM , iLBC , PCMU , PCMA
TLS , SRTP and ZRTP on all versions, OTR/SMP on Linux and macOS only[2]
No limit
IM, file transfer, desktop sharing, multi-party conference, wideband
Blink Qt
Battle.net
macOS , Android , iOS , Windows
Proprietary
Free
Unknown
Unknown
Unknown
Unknown
IM, multi-party conference
Unknown
Cisco IP Communicator [3]
Windows
Proprietary
Free (for Cisco SMB Partners only)
SCCP (Skinny ), SIP , TFTP , HTTP (for XML Services)
G.722 wideband, G.711a , G.711u , iLBC , iSAC , G.729a , G.729ab
SRTP
No limit (with bridge), 2 otherwise[4]
Call Recording, Silent Monitoring, Multiple lines and directory numbers, Configurable speed dial, Calling name and number display, Call Waiting, Call Forward, Call Transfer, Three-Way Calling (conference), Call Park, Call Pickup, Redial, Hold, Barge, Callback, Extension Mobility, Message waiting indicator, iDivert, Meet Me conferencing, Group Pickup, Do Not Disturb, XML Services
8.6.6; April 27, 2016; 8 years ago (2016-04-27 )
Discord
macOS , Android , iOS , Windows , Linux
Proprietary
Free, Premium "Nitro" Subscription for Additional Features.
RTP , UDP , WS , HTTPS
Opus
TLS
5000 soft limit for voice calls,[5] 25 hard limit for video[6]
IM, file sharing, in-game overlay
59746; April 24, 2020; 4 years ago (2020-04-24 )
Ekiga
Linux , Windows , OpenSolaris
GPL-2.0-or-later
Free
SIP , H.323 , STUN , Zeroconf , XMPP, RTP
H.263 , H.264/MPEG-4 AVC , Theora , iLBC , Speex, SILK, GSM , ...
No
Unknown
Video, IM, LDAP, Call Forwarding, Call Transfer, Auto-answering, PC to phone, phone to PC, Multiple accounts, USP support, Message waiting indicator, SIMPLE-based presence etc.
Template:Latest stable software release/Ekiga
Empathy
Linux
GPL-2.0-or-later
Free
SIP , XMPP (Jingle ), ICE (STUN -TURN ), Zeroconf
Unknown
No
Unknown
IM, multi-user A/V,[7] collaborative applications
Template:Latest stable software release/Empathy (software)
Eyeball Chat
Windows
Proprietary
Free
SIP , STUN , ICE , XMPP
Unknown
Yes
5[8]
IM, Conferencing, Voice, Video and SIMPLE based presence
Windows 3.2; 2009; 15 years ago (2009 )
FaceTime
iOS , macOS
Proprietary
Free
SIP , IETF , Signaling protocol for VoIP, STUN , TURN and ICE | IETF , technologies for traversing firewalls and NAT
H.264 Video, AAC-ELD Audio, H.263 and VP8
RTP , SRTP IETF |standards for delivering real-time and encrypted media streams for VoIP.
20
Video, voice, conferencing, with additional tools available as "Services".
Google Hangouts
Linux , Windows , macOS , Android , iOS
Proprietary (using libjingle )
Free
XMPP
H.264/SVC, H.264/AVC , H.263 and VP8
SRTP
10
Video, chat, screen sharing, with additional tools available as "Hangout Apps".
Template:Latest stable software release/Google+ Hangouts
IBM Sametime
Linux , macOS , Windows , mobile
Proprietary
?
SIP -SIMPLE , T.120
H.323
TLS
Unknown
IM, File transfer, Voice, Presence, Server stored contact list, HTTP tunneling, plugins, embedable in Lotus Notes [9]
8.5.2; May 8, 2011; 13 years ago (2011-05-08 )
Jami by Savoir-faire Linux
Android , FreeBSD , iOS , iPhone , Linux , Microsoft Windows , OS X [10]
GPL-3.0-or-later
Free
SIP , RTP , STUN per account, SRV , DHT , P2P
Audio: Opus , Speex , G.722 , G.711 , GSM , VP8 , G.729 , iLBC . Video: H.264 , H.263 , VP8 , MPEG-4
Voice encryption (SRTP with SDES or ZRTP ) and signaling encryption (TLS ), multiple realms authentication mechanism
No limit
Blockchain ID-management, Gnome-KDE client, address book, multiple accounts, unlimited call number, call transfer, call hold-unhold, call recording, multi-way conferencing
iOS 3.28 / December 17, 2021; 2 years ago (2021-12-17 ) [11] Android 20211210-01 / December 21, 2021; 2 years ago (2021-12-21 ) [12] Windows 202112221025 / December 22, 2021; 2 years ago (2021-12-22 ) [13] macOS 2.10 / December 16, 2021; 2 years ago (2021-12-16 ) [14]
Jitsi
Linux , macOS , Windows (all java supported). Experimental Android builds are also available.[15]
Apache-2.0
Free
SIP -SIMPLE , XMPP -Jingle STUN ICE , TURN
SILK , G.722 , Speex , Opus , G.711 (PCMU/PCMA), iLBC , GSM , G.729 , H.264 , H.263 , VP8
ZRTP , SRTP , OTR , TLS
Unknown
Text messaging, audio-video telephony, IPv6 (often broken,[16] P2P not supported[17] ), call recording, 64-bit
2.10 (build.5550) (February 5, 2017; 7 years ago (2017-02-05 ) ) [±]
Librestream Onsight Connect
Windows , Android , iOS
Proprietary
?
SIP , RTP , STUN
G.711 , H.264 , MPEG, and others
TLS , SRTP
Unknown
Voice, video, conferencing, image sharing, incoming call/IM push notifications.
February 27, 2018; 6 years ago (2018-02-27 )
Linphone
Linux , Windows , macOS , Android , iPhone , BlackBerry
GPL-3.0-or-later
Free
SIP
Speex , Opus , G711 , GSM , G.722 , VP8 (WebM), H263 , MPEG4 , Theora and H264 (plugin)
TLS , SRTP , ZRTP
Unknown
Video, IM, STUN, IPv6 (disables IPv4 support when enabled), P2P, Secure Encryption, User own Encryption via Provided API https://gitlab.linphone.org/BC/public/linphone-desktop
4.2.5; June 25, 2020; 4 years ago (2020-06-25 ) , provides daily snapshots via http://www.linphone.org/snapshots
Messages
macOS
Proprietary
Free, only macOS and iOS
SIP AIM ICQ XMPP
H263 , H264
Unknown
Unknown
Integrated, PBX independent
7.0; July 25, 2012; 11 years ago (2012-07-25 )
MicroSIP
Windows
GPL-2.0-or-later
Free
SIP , STUN , ICE , SIMPLE
Speex , iLBC , GSM , G.711 , G.722 , G.729 , SILK , Linear PCM
TLS , SRTP
Unknown
Video, voice, IM and Presence
3.20.7 (25 August 2021; 2 years ago (2021-08-25 ) ) [±] [18]
Movim
Any, Progressive web application
GPL-2.0-or-later
Free
XMPP , STUN , TURN
Depending the web-browser
TLS
2
IM, microblogging, social-network, OMEMO encryption, screen-sharing, file transfer
2024-06-21
Mumble
Linux , macOS , iOS , Windows , Android
New BSD license
Free
ICE
CELT , Speex , Opus
TLS and OCB-AES128
No limit (limited only by server bandwidth and memory)
Chat with (limited) embedded HTML, Automatic Gain Control , very low latency , Access Control Lists for user management, Customizable In-Game Overlay for OpenGL and DirectX, Directional Audio, Plugin Support, Nested Channels, Echo cancellation for headset free use, Global Public Server List, Logitech G15 support, Push-To-Talk and Voice-Activation
1.4.287; September 14, 2022; 21 months ago (2022-09-14 )
Nymgo
Windows , Android , iOS
Proprietary
Free
SIP , RTP and RTCP
Unknown
Yes
No limit
Address Book integration, Call recording/export, Mute, On Hold, Caller ID definition
4.2.9; March 2013; 11 years ago (2013-03 )
oovoo
macOS , iOS , Windows , Android
Proprietary
Free
SIP , RTP and RTCP
Unknown
Yes
12
Address Book integration, Call recording/export, Mute, On Hold, Caller ID definition
4.2.9; March 2013; 11 years ago (2013-03 )
Phoner
Windows
Proprietary
Free
SIP , TAPI , CAPI
G.711a , G.711u , G.722 , G.726 , G.729 , GSM , iLBC , speex , Opus
TLS , SRTP , ZRTP
8
Conferencing, call redirection, call recording
3.23 (5 March 2021; 3 years ago (2021-03-05 ) ) [±] [19]
PhonerLite
Windows
Proprietary
Free
SIP
G.711a , G.711u , G.722 , G.726 , G.729 , GSM , iLBC , speex , Opus
TLS , SRTP , ZRTP
8
Conferencing, call redirection, call recording
3.20 (7 August 2023; 10 months ago (2023-08-07 ) ) [±] [20]
QuteCom
Linux , macOS , Windows XP-2000
GPL
Free
SIP
G.711 , G.729 , iLBC , AMR-NB , G.722 , Speex, AMR-WB (G.722.2 ), H.263 , H.263+ , H.264 , Dirac [21]
SRTP , but key exchange via Everbee key Exchange which is not a Standard
Unknown
Video, IM (MSN, AIM, ICQ, Yahoo!, XMPP , Google Talk ), voicemail, wengo to phone, conferencing.
2.2.1 (22 June 2011; 13 years ago (2011-06-22 ) [22] ) [±]
Roger Wilco GameSpy
Windows
Proprietary
?
Proprietary
?
?
Unknown
?
2001; 23 years ago (2001 )
Signal
Linux , macOS , Windows , Android , iPhone
GPLv3 clients and AGPLv3 server
Free
RingRTC (WebRTC over Signal protocol [23] )
Opus [23]
?
Unknown
Signal also allows users to send text messages, files, voice notes, pictures, GIFs, and video messages over a Wi-Fi or data connection to other Signal users on iOS, Android and a desktop app. The app also supports group messaging, read receipts and typing indicators, both of which can be disabled.
Android 7.8.1[24] / 16 May 2024 iOS 7.11[25] / 18 May 2024 Desktop 7.9.0[26] / 15 May 2024
Skype
Linux (with limited functionality),[27] macOS , Windows 2000-XP-Vista-7-Mobile (unsupported), BREW , Windows Phone , Android , iPhone , PSP
Proprietary
Free
Proprietary P2P protocol [a]
SILK
TLS
25 starting with version 3.6.0.216. 10 with 2.x
Conferencing, video, file transfer, voicemail, Skype to phone, phone to Skype, additional P2P extensions (games, whiteboard, etc...); depending on platform.
Windows , UWP 15.119.201.0 / 6 May 2024; 58 days ago (2024-05-06 ) [28] Windows , desktop8.119.0.201 / 6 May 2024; 58 days ago (2024-05-06 ) [28] macOS 8.119.0.201 / 6 May 2024; 58 days ago (2024-05-06 ) [28] Linux 8.119.0.201 / 6 May 2024; 58 days ago (2024-05-06 ) [28] Android 8.119.0.202 / 6 May 2024; 58 days ago (2024-05-06 ) [29] iOS 8.119.0.201 / 6 May 2024; 58 days ago (2024-05-06 ) [30] (iPhone and iPad )
SONIX
Windows
Proprietary
Free
UDP
Audio: TYXIT LivePro
Yes
Unknown
Ultra-low latency audio communication, screen sharing, file sharing, audio recording, chat text and picture, echo canceling, background noise canceling, push-to-talk , end-to-end encryption, voice activation, automatic gain control, user managment
Beta 2023-09-14 (Windows)
Steam Chat
Web, Phones, Desktop
Proprietary
WebRTC
TeamSpeak
Linux , Windows , macOS , FreeBSD , Android , iOS
Proprietary
Free
Unknown
CELT , Speex (both until server version 3.5.0), Opus [31]
Yes
32 unlicensed, 512 with Non-Profit License (available until September 2018), up to 1024 (Gamer License), 2000
Simultaneous server conferencing with tabs, 3D sound effects, scalable permissions system, firewall friendly file transfers, in-game overlay for DirectX & OpenGL games, global public server list, plugin system
3.5.5; November 4, 2020; 3 years ago (2020-11-04 )
TeamTalk
Linux , Windows , macOS , Android , iOS , Raspbian
Proprietary
Free
Proprietary
Opus , Speex , VP8
No
1000
Video, file sharing, desktop sharing, stream media files (MP3 , AVI )
5.3.3; November 2018; 5 years ago (2018-11 )
TeamViewer
Linux , Windows , macOS , iOS, Android[32]
Proprietary
Free (personal use only)
Unknown
Unknown
AES256
Unknown
Unknown
Windows (desktop app)15.29.4 / 26 April 2022; 2 years ago (2022-04-26 ) [33] macOS 15.29.4 / 26 April 2022; 2 years ago (2022-04-26 ) [34] Linux 15.29.4 / 26 April 2022; 2 years ago (2022-04-26 ) [35] Android 15.29.96 / 26 April 2022; 2 years ago (2022-04-26 ) [36] iOS 15.29.1 / 4 May 2022; 2 years ago (2022-05-04 ) [37] Windows (UWP app )15.100.209759[38]
Telephone
macOS 10.10.2
BSD
Free
SIP , STUN , ICE
Unknown
No
Unknown
Address Book integration
1.1.4; March 6, 2012; 12 years ago (2012-03-06 )
Toktumi Unlimited, Line2 Pro
Windows XP-Vista-7, macOS , iOS , Android
Proprietary
Free
Proprietary with SIP core
Unknown
Unknown
20
Conferencing, voicemail, caller ID, call-waiting, address book integration; auto-attendant, call-forwarding
Windows; August 2010; 13 years ago (2010-08 ) ; macOS; October 2010; 13 years ago (2010-10 )
Tox
Linux , macOS , Windows , Android , FreeBSD
GPL-3.0-or-later
Free
Tox , VP8
Opus ,
NaCl
Unknown
Voice, video, instant messaging, file transfers
Unknown
Tru App
Windows 2000-XP-Vista-7, macOS , Linux iOS , Android , Symbian , BlackBerry OS ,
Proprietary
Free
SIP , XMPP
Unknown
Unknown
Unknown
Chat, file transfer, voicemail, inbound numbers, integration with GTalk, Microsoft Live, Skype
Tuenti
Android , iPhone , Windows Phone
Proprietary
Free
WebRTC , SIP , XMPP
iLBC , Opus
Yes
Unknown
Voice, video, Instant messaging , group chat, photo and video sharing, SMS and MMS, native and social network contacts integration, incoming call/IM push notifications.
Twinkle
Linux
GPL-2.0-or-later
Free
SIP
G.711 A-law μ-law, G.726 , GSM , iLBC , Speex narrow wide ultrawide
SRTP , ZRTP
3
Conferencing, chat, file transfer, Firefox integration, call redirection, voicemail, support of VoIP-to-Phone services
1.10.3 (February 19, 2022; 2 years ago (2022-02-19 ) ) [±]
Ventrilo
macOS , Windows , iOS , Android
Proprietary
Free
Unknown
Unknown
No
8
Conferencing, chat, text-to-speech
3.0.8
Viber
Linux ,[b] macOS ,[b] Windows ,[b] Android , Bada , BlackBerry OS , iOS , Series 40 , Symbian , Windows Phone
Proprietary
?
Unknown
Unknown
Yes[41]
Unknown
Varies by platform: Text, picture and video messaging on all, voice calling only on iPhone, Android and Microsoft's Windows Phone
Android 20.4.3.0[42] / 2 July 2023; 12 months ago (2 July 2023 ) iOS 20.4.0[43] / 4 July 2023; 11 months ago (4 July 2023 ) Windows 20.2.0[44] / 12 June 2023; 12 months ago (12 June 2023 ) macOS 20.2.0[44] / 12 June 2023; 12 months ago (12 June 2023 ) Linux 20.3.0.1[45] / 14 June 2023; 12 months ago (14 June 2023 )
Vonage
Linux, macOS, Windows, Android, iOS
Proprietary
not free
SIP, STUN, ICE, TURN
Audio: Opus, G.711
Video: VP8
SRTP
50
VoIP, video, instant messaging, presence (SIP SIMPLE), PSTN (inbound and outbound), call waiting, call hold, call forwarding, voicemail, message-waiting indication, 3-way conferencing, contacts integration, receptionist console, video, group chat, content sharing, SMS over IP services, native and social network contacts integration, incoming call/IM push notifications, fax, file sharing, screen sharing (desktop only), number programmability.
Wire
Linux, Windows, macOS, iOS, Android, Web
GPLv3
not free
?
Audio: Opus
Video: VP8
DTLS , SRTP [46]
10[47]
End-to-end encryption by default for everything, instant messaging, video call, video group call, file sharing, GIF sharing, push to talk, edit message, delete message (on both side), timed messages, doodling, identity verification, screen sharing (desktop only)
?
Yahoo! Messenger
Classic Mac OS (8, 9), macOS , Windows , (Linux , FreeBSD version VoIP incapable)
Proprietary
Free
SIP (using TLS ) and RTP (media)
Unknown
Unknown
Unknown
Video, file transfer, PC to phone, phone to PC
Windows : 11.5.0.228; May 31, 2012; 12 years ago (2012-05-31 ) Mac : 3.0.1; July 20, 2011; 12 years ago (2011-07-20 ) Linux : 1.0.6; September 2003; 20 years ago (2003-09 ) SunOS 5.7 : 0.99.17-1; September 2003; 20 years ago (2003-09 ) Solaris 8 : 1.0.4; September 2003; 20 years ago (2003-09 ) FreeBSD 4-5 : 1.0.4; September 2003; 20 years ago (2003-09 ) iOS : 2.2.6; July 12, 2012; 11 years ago (2012-07-12 )
Yate Client
Linux , macOS , Windows
GPL
Free
SIP , IAX , XMPP , H.323
G.711a , G.711u , GSM 06.10 , iLBC , Speex , G.723 , G.726 , G.728 , G.729
SRTP , maybe ZRTP ?
Unknown
6.0.0; September 2017; 6 years ago (2017-09 )
Zfone
Linux , macOS , Windows
Proprietary (with viewable source)
Includes time bomb provision
SIP , RTP
Unknown
SRTP , ZRTP
Unknown
Beta 2008-09-04 (Linux 0.9.224), (macOS 0.9.246), (Windows 0.9.206)
^ It is possible to connect by SIP to the Skype network via additional "Skype Connect" PBX software and alternative (SIP) client software/hardware. Neither the Skype software nor the Skype network supports SIP directly[1]
^ a b c Viber must be first installed on a mobile phone to function on a desktop operating system[39] [40]
Discontinued softphone service
Mobile phones
For mobile VoIP clients:
Program
Operating systems
License
Open source
Protocols
Codecs
Encryption
Other abilities
Latest release
Acrobits Softphone
Android v2.2+, iOS v7.0+
Proprietary
No
SIP
G.711 , G.722 , iLBC , GSM , G.729
TLS , SRTP , ZRTP
VOIP over Wi-Fi or 3G iOS only: push notifications, video, number rewriting, address book matching, sms for betamax providers and pennytel
Acrobits Softphone: 3.20 (Android), 5.2 (iOS)
Google Duo
iOS, Android
Proprietary , freeware
No
WebRTC
?
?
One-to-one voice and video calling.
Android 174.0 / September 9, 2022; 21 months ago (2022-09-09 ) [48] iOS 174.1.0 / September 16, 2022; 21 months ago (2022-09-16 ) [49]
Jami by Savoir-faire Linux
iOS , Android [50]
GPLv3
Yes
SIP
Video: H264, VP8, MP4V, H263, Audio: Opus 48000 hz, G722 PCMA, PCMU
SRTP , SIP over TLS
?
Version 202103261733 March 2021; 3 years ago (2021-03 )
Jajah Mobile Web
Symbian, Windows Mobile (version unknown)
Proprietary
No
?
?
?
web based service, Call back, no download[51]
?
JusTex by Juphoon
Android, iOS v5.1+
Proprietary
No
SIP
PCMA , PCMU , G.722 , iLBC , iSAC , Opus , H.264 , VP8 , H.263
TLS , TCP , UDP, SRTP
JusTex Softphone over Wi-Fi or 3G, HD voice and video call, Multiparty call, conference.
3.0.1 (iOS); July 13, 2014; 9 years ago (2014-07-13 ) ; 3.0 (Android); July 9, 2014; 9 years ago (2014-07-09 )
Line
Android, iOS
Proprietary
No
?
?
?
?
Line2
Android, iOS
Proprietary , freeware
No
Proprietary with SIP core
?
?
Tri-mode calling (cellular, 3G/4G data, Wi-Fi), SMS over IP, visual voicemail, 20-person conference calls, auto-attendant, call-forwarding
1.0.4 Android, 3.2.1 iOS
Signal by the Signal Foundation
iOS, Android
GPLv3
Yes
WebRTC [52]
Opus [52]
TLS , Signal Protocol [52]
End-to-end encryption by default for everything. CallKit and location privacy,[53] one-to-one and group messaging, video calling,[53] image/video sharing, timed messages, identity verification, screenshot blocking. Android only: SMS/MMS messaging, doodling,[54] GIF sharing.[55]
Template:Latest stable software release/Signal
Sipdroid
Android
GPL
Yes
SIP
?
?
Uses Wi-Fi , 3G or EDGE
2.7
Tango by TangoME Inc.
iOS, Android, Microsoft Windows, macOS, Windows Phone
Proprietary , freeware
?
?
?
?
VoIP, Wi-Fi out & in, SMS over IP, call-through & call-back, instant messaging, videoconferencing
?
Truphone
Nokia-Symbian, iOS, Android, BlackBerry
Proprietary , freeware
No
SIP
?
?
VoIP, Wi-Fi out & in, SMS over IP, call-through & call-back, connection management, provisioning
Symbian 4.0, iOS 1.11.1
Vopium
Symbian, Java ME , Android, BlackBerry RIM, iOS, Windows Mobile 2003 SE and higher
Proprietary , freeware
No
SIP, MSN, Skype, Yahoo, AOL, ICQ, Google Talk, Facebook & Twitter
GSM
?
Wi-Fi VoIP, GSM call-through, SMS over IP, least cost routing, synchronising-backup mobile contacts and calendar
2.0
WhatsApp
Android, BlackBerry, iOS, Symbian, Windows Phone
Proprietary , freeware
No
?
?
ECDH , SRTP [56]
VoIP and instant messaging over Wi-Fi or a data connection.
iOS 24.6.77[57] / March 25, 2024; 3 months ago (March 25, 2024 ) Android 2.24.6.78[58] / March 25, 2024; 3 months ago (March 25, 2024 ) Windows 2.2411.4.0[59] / March 25, 2024; 3 months ago (March 25, 2024 ) macOS 2.24.5.76[60] / March 14, 2024; 3 months ago (March 14, 2024 )
Windows Mobile 6
Windows Mobile 6 Professional/Standard
Proprietary
No
SIP to publicly and non-publicly routable servers
?
?
Wi-Fi Mobile VoIP
6.1
Yuilop
Android , iOS
, Windows Phone , BlackBerry OS
Proprietary , freeware
No
XMPP , RTP
iLBC
TLS
VoIP over 3G-4G-LTE and Wi-fi, SMS, group chat, photo sharing, Location sharing, virtual phone numbers
iOS 2.4 (November 26, 2014; 9 years ago (2014-11-26 ) [61] ) [±]
Android 2.0.2 (February 12, 2014; 10 years ago (2014-02-12 ) ) [±]
Windows Phone 7.x 1.0.1.7 (September 12, 2013; 10 years ago (2013-09-12 ) ) [±]
Windows Phone 8.x 1.0.0.4 (September 18, 2013; 10 years ago (2013-09-18 ) ) [±]
BlackBerry OS 1.0.1 (May 31, 2013; 11 years ago (2013-05-31 ) ) [±]
Kindle Fire 2.0 (December 19, 2013; 10 years ago (2013-12-19 ) [62] ) [±]
Frameworks and libraries
Program
Operating systems
License
Protocols , based on, compatible with
Encryption
Other abilities
Key and target markets
Latest release
Telepathy , Farstream
Linux , macOS , Windows
LGPL
SIP, XMPP (Jingle ), ICE (STUN/TURN), UPnP
No
Multi-user A/V conferencing, IM, collaborative applications
Mobile devices (Maemo, Meego), Linux desktop or embedded
spec 0.27.2; September 24, 2013; 10 years ago (2013-09-24 )
OPAL
Windows , Linux (including embedded variants), macOS
MPL
SIP, H.323, IAX2, CAPI, VXML
Unknown
Multi-user A/V conferencing, IM, IVR
Softphones, softswitches, telephony application servers
3.14.3; October 10, 2014; 9 years ago (2014-10-10 )
GNU oSIP
Linux , Windows , macOS , Android , iPhone , BlackBerry
LGPL
SIP, SDP
Unknown
Multi-user A/V conferencing, IM, IVR
Softphones, embedded and mobile devices, telephony application servers
4.1.0; December 18, 2013; 10 years ago (2013-12-18 )
Server software
Name
Operating systems
License
Protocols
Encryption
Notable features
Target markets
Latest release
3CX Phone System
Windows , Linux
Proprietary
SIP
TLS , SRTP
VoIP /VideoOverIP calls and conferencing, voicemail and instant messaging
< 50,000 users
18.2; December 8, 2021; 2 years ago (2021-12-08 )
AskoziaPBX
Standalone program (Linux -based)
Proprietary
SIP , H.323 , IAX , SCCP
No
ISDN , voicemail , conferencing , MOH , ACD , IVR , call forwarding , call recording
SMEs up to 50 users
5.4; September 2, 2017; 6 years ago (2017-09-02 )
Asterisk PBX
Linux , BSD , macOS , Solaris
GPL-2.0+ , optional: Proprietary [63]
SIP , H.323 , IAX , MGCP , VoFR , XMPP , Google Talk , TDM
TLS , SRTP
VoIP gateway, voicemail , basic accounting (expandable with ODBC -compliant database), billing, conferencing , hot desking , IVR trees with conditional logic, call waiting , automated call distribution
Enthusiasts, developers, enterprise users (capacity dependent on server design, scalable across multiple servers)
21.3.1 (17 May 2024; 47 days ago (2024-05-17 ) [64] )
20.5.0 LTS (18 October 2023; 8 months ago (2023-10-18 ) [65] )
19.8.1 (7 July 2023; 11 months ago (2023-07-07 ) [66] )
18.20.0 LTS (18 October 2023; 8 months ago (2023-10-18 ) [67] )
Brekeke SIP Server
Linux , Windows Server 2016 and Server 2019
Proprietary
SIP
TLS , SRTP
SIP Registrar/Proxy
SIP Service Providers, VoIP service providers, Healthcare, Security
3.12.2.2; January 11, 2022; 2 years ago (2022-01-11 )
Brekeke PBX
Linux , Windows Server 2016 and Server 2019
Proprietary
SIP
TLS , SRTP
VoIP /VideoOverIP calls and conferencing, voicemail
Hosted service providers, Mid-large enterprise
3.12.2.2; January 11, 2022; 2 years ago (2022-01-11 )
CallMax Softswitch
Linux
Proprietary
SIP , H.323
SSL , TLS , HTTPS
Integrated billing , IP PBX , calling card , call shop , web portal , retail SMS
SIP Service Providers, Residential & Business VoIP providers, Class 5 softswitch users
3.6; October 1, 2015; 8 years ago (2015-10-01 )
CommuniGate Pro
Linux , BSD , macOS , Windows , Solaris , HP-UX , AIX
Proprietary
SIP , XIMSS , XMPP , WebRTC
SSL , TLS , SRTP
SIP Registrar/Proxy, Authentication, Diameter , RADIUS , ENUM
Mobile network operators , ISPs , SaaS providers
6.2.14; August 16, 2019; 4 years ago (2019-08-16 )
Dial Gate VoIP Softswitch
Linux , Windows
Proprietary
SIP
TLS , SRTP
Billing server, real-time account and line monitoring, web portal
Softswitch users, service providers
4.3; June 1, 2014; 10 years ago (2014-06-01 )
Dial-Office IP-PBX
Linux , Windows
Proprietary
SIP
TLS , SRTP
Unified communications, conference calls , remote worker support and voicemail
Small businesses, Mid-large enterprises
4.1; December 2013; 10 years ago (2013-12 )
Elastix
Linux
Proprietary
SIP , IAX , H.323 , XMPP
TLS , SRTP
Unified communication server that also supports chat, mail and fax.
Capacity dependent on server design, scalable across multiple servers
5.0.0; December 7, 2016; 7 years ago (2016-12-07 )
FreeSWITCH
Linux , BSD , macOS , Solaris , Windows
Mozilla Public License
SIP , NAT-PMP , STUN , SIMPLE , XMPP , Google Talk (Jingle ), IAX , H.323 , MRCP , RSS , Skype
TLS , SRTP , ZRTP
Recording, Voicemail, Conferencing, RADIUS , ENUM , IM Proxy, Streaming, Media gateway, Soft-PBX, IVR (modular)
Large soft-switch users, home PBX users, softphone users
1.10.11 (December 22, 2023; 6 months ago (2023-12-22 ) [68] ) [±]
FreePBX
Linux , BSD , Solaris
GPL
SIP , IAX , H.323 , XMPP
TLS , SRTP
Complete PABX Service, based on Asterisk and PHP 5.6; provides a full replacement for a legacy non-VoIP phone system; under current and active development
Scales from Raspberry PI (3 users) to multiple parallel clusters (10K+ simultaneous calls)
14.0; August 2017; 6 years ago (2017-08 )
GNU Gatekeeper
Linux , FreeBSD , macOS , Windows XP-2000-Vista-7
GPL
H.323
H.235
H.460.18 firewall traversal, routing, accounting
video conferencing, VoIP carriers large and small
3.7; August 15, 2014; 9 years ago (2014-08-15 )
HERO Hosted PBX
Linux , Windows
Proprietary
SIP
TLS , SRTP
Unified Communications, billing server, cloud-based management and web interface
Mid-large enterprises, VoIP carriers and service providers, telecom operators
4.3; December 2013; 10 years ago (2013-12 )
Kerio Operator
Linux , VM
Proprietary
SIP
SSL , TLS , SRTP
integrated firewall, Auto attendant, Call queues, Conference calling, Call forwarding, pickup, parking, recording, Click to Call, Video calling, Fax support, Paging, Salesforce .com and CRM integration, Voicemail to email, complementary desktop Softphone app
SME
2.5.2; November 15, 2016; 7 years ago (2016-11-15 )
MediaCore SBC
Linux
Proprietary
H.323 , SIP , SMPP , HTTP
SSL , TLS , HTTPS
Dynamic routing mechanisms: LCR , jurisdictional and origin-based; integrated billing , SIP-H.323 protocol converter, transcoding , revenue assurance , SBC , full and media proxies, wholesale messaging and SMS hubbing
Transit VoIP services providers, VoIP wholesale carriers, VoIP termination providers, Wholesale messaging providers
4.8; February 2021; 3 years ago (2021-02 )
Murmur
Linux , BSD , macOS , Windows
BSD , GPL
CELT , Speex , Opus
TLS
Chat with (limited) embedded HTML, ACLs for user management, Customizable In-Game Overlay, Directional Audio, Plugin Support, Nested Channels
Individuals to Small and medium enterprise (25-5000 users)
1.2.17; September 24, 2016; 7 years ago (2016-09-24 )
Objectworld UC Server
Windows XP-2003-2008
Proprietary
SIP
No
IP PBX , personal assistants, IVR, automated phone provisioning, fax server, unified messaging, Outlook, Exchange and Lotus Domino-Notes integration, conferencing, outbound dialing
Small and medium enterprise (25-2000 users)
4.4.2; May 2009; 15 years ago (2009-05 )
Kamailio , OpenSIPS (formerly named OpenSER)
Linux , BSD , Solaris
GPL
SIP , XMPP
TLS , SRTP
SIP registrar-proxy, authentication, Diameter , RADIUS , ENUM , least-cost-routing, many others
SIP Service Providers
5.2.8; October 2020; 3 years ago (2020-10 )
SIP Express Router (SER)
Linux , BSD , Solaris
GPL
SIP
No
SIP Registrar/Proxy, Authentication, Diameter , RADIUS , ENUM , many others
SIP Service Providers
2.0.0 Ottendorf
sipXecs IP PBX
Linux
AGPL
Native SIP call control, XMPP
TLS , SRTP
Full redundancy (HA), instant messaging, voicemail, user portal, admin GUI, plug & play management including phones and gateways, fully featured
Enterprises between 10 and 10,000 users, multi-site
14.04.2; July 2014; 10 years ago (2014-07 )
vzRoom
Windows
Proprietary
SIP
SSL , TLS , AES
Instant messaging-chat, VoIP, video, sharing (desktop, video, file), whiteboard, scheduler, recording
Individual to small and medium enterprise (2-1,000 users)
0.8.8.735; November 2010; 13 years ago (2010-11 )
Yate
BSD , Linux , macOS , Windows
GPL
SIP , IAX , H.323 , ISDN , XMPP (Jabber), Jingle (Google Talk ), MGCP , SS7 over IP, Cisco SLT (Signalling Link Transport) (SS7 MTP2 backhaul over IP), SCTP , SCCP , TCAP , MAP CAMEL
SSL , TLS , SRTP
Voice, video, file transfer, data, H323 to SIP signalling proxy, instant messaging, IVR , PC2Phone and Phone2PC gateway, SCCP — GTT routing between networks, Secure Unified Communications, SIP registrar-proxy, SIP SBC (session border controller), USSD, voicemail, VoIP, VoIP to PSTN gateway, conference server (max 200 voice channels per conference), call centre server, prepaid and postpaid cards
Deployed on home servers and large networks with millions of users
6.3; February 2021; 3 years ago (2021-02 )
Secure VoIP software
This section
needs expansion . You can help by
adding to it .
(July 2016 )
VoIP software with client-to-client encryption
The following table is an overview of those VoIP clients which (can) provide end-to-end encryption .
VoIP software with client-to-server encryption
The following table is an overview of those VoIP clients which (normally) provide client-to-server encryption.
Notes
^ End-to-end authentication protects communications from man-in-the-middle attacks by the service provider.
^ a b Only if the user has registered with a compatible SIP provider. Some SIP providers do not support certain encryption protocols.
^ a b Only the encryption related source code is open.
^ Only on the network connection, not on the end-to-end layer.
See also
References
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^ "Download Blink" . Blink Project's Website . 14 January 2016. Retrieved 22 June 2016 .
^ "Release Notes for Cisco IP Communicator 8.6.6" . Cisco . Retrieved 2018-04-03 .
^ "Cisco IP Communicator 8.6" . Cisco . Retrieved 2018-04-03 .
^ "Discord on Twitter" . Twitter . Retrieved 2016-12-29 .
^ "Wave Hello to Server Video" . Retrieved 2020-06-21 .
^ "Telepathy Q&A from the Boston GNOME Summit" . Retrieved 4 February 2014 .
^ Eyeball Chat 3.2 Features Archived 2009-03-21 at the Wayback Machine . EyeballlChat.com.
^ "Telephony with Lotus Sametime software" . IBM.com. Retrieved 2010-02-16
^ "News" . Ring . 2018-07-25. Archived from the original on 2018-12-26. Retrieved 2018-12-01 .
^ "Jami" . App Store .
^ "Jami - Apps on Google Play" . play.google.com .
^ "Index of /windows" . dl.ring.cx .
^ "Jami" . Mac App Store .
^ "Jitsi (SIP Communicator) Android — Nightly Builds Index" . Jitsi.org. Archived from the original on 2014-11-29. Retrieved 2014-11-15 .
^ Interview with Emil Ivov , Deploy360 blog
^ "[#JITSI-1166] P2P IPv6 calls still do not work with explicit IPv6 addresses, no matter if brackets are used — Java.net JIRA" . Java.net. Archived from the original on 2014-02-21. Retrieved 2014-02-13 .
^ Release history on MicroSIP download page
^ Release history on Phoner download page
^ Changelog on PhonerLite download page
^ "Supported Codecs" . qutecom.org . Retrieved 19 December 2014 .
^ "Announcement: QuteCom 2.2.1" . Archived from the original on 2 April 2013.{{cite web }}
: CS1 maint: unfit URL (link )
^ a b "Video calls for Signal now in public beta" . Signal . 2017-03-13. Retrieved 2020-03-02 .
^ "Release v7.8.1 · signalapp/Signal-Android" . 16 May 2024. Retrieved 19 May 2024 .
^ "Release 7.11 · signalapp/Signal-iOS" . 18 May 2024. Retrieved 19 May 2024 .
^ "Release v7.9.0 · signalapp/Signal-Desktop" . 15 May 2024. Retrieved 19 May 2024 .
^ "Microsoft to retire Skype Linux app on July 1" . 9 June 2017.
^ a b c d "Release Notes for Skype for Windows, Mac and Linux" . Skype Support .
^ "Release Notes for Skype on Mobile" . Skype Support .
^ "Skype for iPhone" . App Store . Retrieved 2024-05-20 .
^ "New TeamSpeak3 Client and Server released today" . TeamSpeak Systems GmbH. Retrieved 2015-08-04 .
^ "TeamViewer overview" . GetApp.
^ "Windows v15.29.4 - Teamviewer Support" . TeamViewer. 5 May 2022.
^ "macOS v15.29.4 - Teamviewer Support" . TeamViewer. 5 May 2022.
^ "Linux v15.29.4 - Teamviewer Support" . TeamViewer. 5 May 2022.
^ "Android Host v15.29.96 - Teamviewer Support" . Retrieved 5 May 2022 .
^ "TeamViewer: Remote Control" . App Store . Apple . Retrieved 5 May 2022 .
^ "TeamViewer: Remote Control" . Windows Store . Microsoft . Retrieved 19 November 2019 .
^ Brad Chacos, Brad. "Hands on with Viber's new desktop app: It's no Skype" . www.pcworld.com . IDG Consumer & SMB. Archived from the original on 2014-07-25. Retrieved 15 November 2014 . If you don't have Viber on your phone and try to install the service on your PC, the app will redirect you to its website and ask you to install Viber on your phone first.
^ Viber Unveils Desktop App
^ a b Lunden, Ingrid (19 April 2016). "Viber adds end-to-end encryption and hidden chats as the messaging app privacy wave grows" . TechCrunch . AOL Inc. Retrieved 12 July 2016 .
^ "Android: Viber - Safe Chats And Calls 20.4.3.0" . 2 July 2023. Retrieved 7 July 2023 .
^ "iOS: Version History 20.4.0 Jul 4, 2023" . 4 July 2023. Retrieved 7 July 2023 .
^ a b "Viber for MacV 20.2.0" . 12 June 2023. Retrieved 7 July 2023 .
^ "viber.rpm" . 14 June 2023. Retrieved 7 July 2023 .
^ a b c "Wire Security Whitepaper" . Wire Swiss GmbH. Retrieved 13 April 2016 .[permanent dead link ]
^ "Wire on Twitter" . Twitter . Retrieved 2017-02-28 .
^ "Google Meet (formerly Google Duo) 174.0.471884746" . APK Mirror . Retrieved 15 October 2022 .
^ "Google Duo on the App Store" . 21 September 2022. Archived from the original on 21 September 2022. Retrieved 21 September 2022 .
^ [1] Jami downloads
^ "JAJAH.Mobile Web" Archived 2009-06-29 at the Wayback Machine . Jajah.com.
^ a b c Marlinspike, Moxie (14 February 2017). "Video calls for Signal now in public beta" . Open Whisper Systems. Retrieved 22 March 2017 .
^ a b Marlinspike, Moxie (13 March 2017). "Video calls for Signal out of beta" . Open Whisper Systems. Retrieved 22 March 2017 .
^ Marlinspike, Moxie (21 December 2016). "Doodles, stickers, and censorship circumvention for Signal Android" . Open Whisper Systems. Retrieved 22 March 2017 .
^ Marlinspike, Moxie (1 November 2016). "Signal and GIPHY" . Open Whisper Systems. Retrieved 22 March 2017 .
^ "WhatsApp Encryption Overview – Technical white paper" (PDF) . WhatsApp Inc. 4 April 2016. Retrieved 9 April 2016 .
^ "iOS: Version History 23.19.0; Sep 20, 2023" . 25 March 2024. Retrieved 29 March 2024 .
^ "WhatsApp apk mirror repo" . 29 March 2024. Retrieved 29 March 2024 .
^ "WhatsApp Win Uptodown Repo" . 25 March 2024. Retrieved 29 March 2024 .
^ "mac:Version History 2.2338.12; Sep 22, 2023" . 14 March 2024. Retrieved 29 March 2024 .
^ http://www.mod-gadget.com/upptalk-app-updated-ipad/
^ "yuilop - Free texts and SMS" . Amazon . Retrieved 10 March 2014 .
^ "Licensing" . Asterisk . Archived from the original on January 17, 2021. Retrieved February 18, 2022 .
^ "ChangeLog-21-current" . Retrieved 22 May 2024 .
^ "ChangeLog-20-current" . Retrieved 27 Oct 2023 .
^ "ChangeLog-19-current" . Retrieved 27 Oct 2023 .
^ "ChangeLog-18-current" . Retrieved 27 Oct 2023 .
^ "Releases - signalwire/freeswitch" . Retrieved 4 March 2024 – via GitHub .
^ a b c d e f g h i j k "Secure Messaging Scorecard. Which apps and tools actually keep your messages safe?" . Electronic Frontier Foundation. 4 November 2014. Retrieved 11 July 2016 .
^ a b " "Letter Sealing" End-to-End Encryption Indicator Icon Introduced to LINE Messaging App" . Line Corporation. 10 August 2016. Retrieved 29 September 2016 .
^ Shin, Ki Bin (11 August 2016). "The next step for even safer messaging: Letter Sealing" . Line Corporation. Archived from the original on 2 October 2016. Retrieved 30 September 2016 .
^ "PGPfone" . pgpi.org . n.d. Archived from the original on 9 November 2000. Retrieved 26 August 2016 .
^ Marlinspike, Moxie (13 March 2017). "Video calls for Signal out of beta" . Open Whisper Systems. Retrieved 30 March 2017 .
^ "Is Silent Phone open source?" . silentcircle.com . Silent Circle. n.d. Retrieved 26 August 2016 .
^ "What are Skype Private Conversations?" . Skype . Microsoft. Retrieved 24 May 2020 . Note: Private conversations can only be accessed on one device at a time.
^ "What are Skype Private Conversations? --(private conversations white paper)--> Skype Private Conversation Technical white paper" . Microsoft. Retrieved 24 May 2020 . Users can verify the security of their conversations by checking the key setup between two users.
^ "What are Skype Private Conversations? --(private conversations white paper)--> Skype Private Conversation Technical white paper" . Microsoft. Retrieved 24 May 2020 . Caller encrypts the SRTP using the generated encryption key, which can only be decrypted by the callee. After the call is setup, the media packets are encrypted using the SRTP keys.
^ "Voice Calls: Secure, Crystal-Clear, AI-Powered" . Telegram. 30 March 2017. Retrieved 30 March 2017 .
^ "Where can I find Threema's source code?" . threema.ch . Threema. n.d. Retrieved 30 October 2017 .
^ a b c d e "Threema cryptography whitepaper" (PDF) . threema.ch . Threema. n.d. Retrieved 30 October 2017 .
^ a b c d e f g "WhatsApp Encryption Overview – Technical white paper" (PDF) . WhatsApp Inc. 4 April 2016. Retrieved 5 April 2016 .
^ "A major upgrade to calling" . Medium . Wire Swiss GmbH. 14 March 2017. Retrieved 14 March 2017 .
^ "Security & Privacy" . Wire . Retrieved 19 January 2020 . New encryption keys are used for each message, so a compromised key has minimal impact.
^ "Is Zfone open source?" . zfoneproject.com . Zfone. 2006. Retrieved 26 August 2016 .
^ "Do you support Elliptic Curve Diffie-Hellman?" . zfoneproject.com . Zfone. 2006. Retrieved 26 August 2016 .
^ "Why do we need ZRTP if we already have SRTP? Isn't SRTP good enough?" . zfoneproject.com . Zfone. 2006. Retrieved 26 August 2016 .
^ "Fix problems with Hangouts - Hangouts Help" .