ServerMod2 is a server side plugin system with a bunch of additional configuration options, bug fixes, security patches and some optimisations built in.

Link: https://github.com/Grover-c13/Smod2

MultiAdmin is a replacement server tool, which was built to help enable servers to have multiple configurations per server instance.

Link: https://github.com/Grover-c13/MultiAdmin

If you want to get more information you can join their discord

Link: https://discord.gg/8nvmMTr