phpMyEdit development was stopped several years ago at version 5.7.1, with no support for newer MySQL or MariaDB, no support for newer PHP, and a lot of open TODOs. This kind of software still has a lot of use today but it needed an update to support the current technologies. As the original repository is frozen, new works have started in this repository.
Version 5.7.2 supports PHP 7.x., uses mysqli_ and is for the rest very close to 5.7.1.
Version 5.7.3 is a bugfix release with a lot of warnings removed.
Version 5.7.4 (now 5.7.4.1) supports PHP 8.x and has some feature changes. It is in much better shape and a good starting point for upcoming releases. See the documentation for more details.
Version 5.7.5 has a lot of improvements.
Why a rename? Because phpMyEdit exists on SF, and multiple versions of the same project exist on github. This is a new departure for a sleeping project.