Minecraft Server Software · Server Tool · by PurpurMC
A drop-in replacement for Paper with extra configuration options and gameplay features.
Purpur
Open source
Server Tool
A Paper fork that adds regionised multithreading, ticking separate regions of the world in parallel.
Folia is Minecraft server software, listed under Minecraft Server Software. It is free.
From the source listing
Folia divides the world into regions that tick independently on separate threads, which lets a server with many spread-out players use more CPU cores. Plugins must be written for this threading model to run on it. It is maintained by the PaperMC project under the GPL.
From the source listing
Same category
Most recently approved first. This is not a recommendation or a ranking.
Minecraft Server Software · Server Tool · by PurpurMC
A drop-in replacement for Paper with extra configuration options and gameplay features.
Purpur
Open source
Minecraft Server Software · Server Tool · by PaperMC
A high-performance Minecraft server that fixes gameplay and mechanics inconsistencies and is the base for most plugin servers.
Paper
World Management & Pregeneration Tools · Server Tool · by dumptruckman and contributors
The Bukkit world management plugin: create, load and travel between multiple worlds on one server.
Paper · Spigot · Purpur · +1MC 26.3 · 26.2
Open source
Guides
Four server jars, one decision that shapes every plugin you can run. What each one is for, and the questions that settle it.
From an empty folder to a running server: the right Java version, the start command, the EULA and the settings worth checking first.