Wikipedia
I-MSCP
i-MSCP (internet Multi Server Control Panel) is an open-source project which allows the management of shared hosting environments on Linux servers. i-MSCP aims to provide an easy-to-use Web interface for end-users (administrators, resellers and clients) and to manage servers without any manual intervention on the filesystem.
i-MSCP has been initialized from the source code of the unmaintained ispCP open-source project but almost everything has been already rewritten. The current version is still mono-server but it is planned to be a true multi-servers software with the next major release that has been planned for end of 2016.
Latest stable is the 1.3.0 version (codename Horner) which has been released on 26 June 2016.