Minecraft 1.21.3 Server Jar
Minecraft 1.21.3 was released by Mojang on 23 Oct 2024 and its server requires Java 21 or newer. 13 server software builds for 1.21.3 are listed below — pick vanilla for the pure game, Paper for plugins, or a mod loader for mods.
The official vanilla server.jar has SHA-1 45810d238246d90e811d896f87b14695b7fb6839.
| Software | Build | Build date | Plugins / mods | Source |
|---|---|---|---|---|
| Vanilla 1.21.3 | — | 23 Oct 2024 | none (data packs) | official |
| Paper 1.21.3 | #83 | 28 Mar 2025 | Bukkit/Paper plugins | official |
| Spigot 1.21.3 | #4398 | 3 Dec 2024 | Bukkit plugins | mirror |
| CraftBukkit 1.21.3 | — | — | Bukkit plugins | mirror |
| Purpur 1.21.3 | #2358 | 4 Dec 2024 | Bukkit/Paper plugins | official |
| Pufferfish 1.21.3 | #27 | 4 Dec 2024 | Bukkit/Paper plugins | mirror |
| Leaves 1.21.3 | #91 | 23 Jan 2025 | Bukkit/Paper plugins | mirror |
| Leaf 1.21.3 | — | 19 Feb 2025 | Bukkit/Paper plugins | official |
| Fabric 1.21.3 | — | — | Fabric mods | official |
| Quilt 1.21.3 | — | — | Quilt/Fabric mods | official |
| Forge 1.21.3 | 53.1.16 | 15 Oct 2026 | Forge mods | official |
| NeoForge 1.21.3 | 21.3.100 | 15 Oct 2026 | NeoForge mods | official |
| SpongeVanilla 1.21.3 | 1.21.3-13.0.1-RC2249 | 23 Oct 2024 | Sponge plugins | official |
Which 1.21.3 server should I use?
- Vanilla — the unmodified game from Mojang.
- Plugins — Paper 1.21.3 or Purpur 1.21.3.
- Mods — the loader your mods target: Fabric, NeoForge, Forge, Quilt.