Bukkit - [IMG] When we first set out to add our personal touch to what hMod offered the community 3 and a half years ago, none of us foresaw the success the...
Aternos - With Aternos, you can run your own Minecraft server for free.
Sponge - The purpose of the Sponge project is to create a plugin development framework for Minecraft.
Spigot - Simply put, Spigot is it.
PaperMC - Paper is a fork of the Spigot server implementation (which is itself a fork of CraftBukkit). Paper strives to bring improved performance, more features, and more APIs for developers to build awesome plugins with.
Magma Forge - Magma combines the functionality of both PaperMC and Minecraft Forge, allowing for the use of boths plugins and mods on one single server.