CubeCart is a ecommerce software solution used by tens of thousands of merchants globally. CubeCart is released under the GPL-3.0 software license agreement.
Install and upgrade instructions can be found online following the links provided below.
https://support.cubecart.com/hc/en-gb/articles/360003831697-How-can-I-install-CubeCart-v6-
https://support.cubecart.com/hc/en-gb/articles/360003794218-How-do-I-upgrade-from-CubeCart-v5-to-v6-
https://support.cubecart.com/hc/en-gb/articles/360003794238-How-do-I-upgrade-from-CubeCart-v4-to-v6-
https://support.cubecart.com/hc/en-gb/articles/360003794258-How-do-I-upgrade-from-CubeCart-v3-to-v6-