Minecraft 1.21.1 Server Status: Which Software Is Out?
Minecraft 1.21.1 was released on 8 Aug 2024. 15 of 17 server programs tracked here have a 1.21.1 build so far. Updated automatically from each project's API, last check 28 Oct 2026, 12:47 UTC.
| Software | 1.21.1 build | Channel | First seen / date | Previews |
|---|---|---|---|---|
| Vanilla | available | stable | 8 Aug 2024 | — |
| Paper | 133 | stable | 28 Mar 2025 | — |
| Spigot | 4344 | stable | 22 Oct 2024 | — |
| CraftBukkit | available | stable | 31 Jul 2026 | — |
| Purpur | 2329 | stable | 31 Oct 2024 | — |
| Folia | not yet | — | — | — |
| Pufferfish | 21 | stable | 22 Oct 2024 | — |
| Leaves | 81 | stable | 16 Nov 2024 | — |
| Leaf | available | stable | 4 Jun 2025 | — |
| Fabric | available | stable | 31 Jul 2026 | 1 preview build |
| Quilt | available | stable | 31 Jul 2026 | 1 preview build |
| Forge | 52.1.20 | stable | 15 Oct 2026 | — |
| NeoForge | 21.1.265 | stable | 25 Oct 2026 | — |
| SpongeVanilla | 1.21.1-12.0.4-RC2569 | stable | 8 Aug 2024 | — |
| Mohist | not yet | — | — | — |
| Arclight | 1.0.2-SNAPSHOT-a3e299… | stable | 25 Oct 2026 | — |
| Magma | 21.1.70-beta | stable | 8 Aug 2024 | — |
"Experimental" means the project has published builds but not yet marked one stable — test before moving a live server. Plugins and mods usually need their own updates too. See how to update safely.