plugin
Mod Observer PluginMinecraft plugin for 1.21.11
Plugin that lets the server manage mods used by the players.
- Latest version
- 2.1.1
- Minecraft
- 1.20 to 1.21.11
- Java
- Java 21+
- Platforms
- Spigot, Purpur, Paper
- Licence
- MIT
- Downloads
- 1.8k
- Updated
- 13 mo ago
- Available on
- Modrinth
Our hostingHost Mod Observer Plugin servers
One click and Mod Observer Plugin is installed on a Paper or Purpur server built for it.
- 1.21.11
- Spigot
- Purpur
- Paper
- One click plugin install
- Paper and Purpur ready
- Automatic updates
- NVMe SSD
Minecraft versions
Every version Mod Observer Plugin declares support for, newest first, with the Java runtime that version needs.
| Minecraft | Through | Java | Evidence | Released |
|---|---|---|---|---|
| 1.21.11 | Spigot, Purpur, Paper | 21+ | declared | 9 Dec 2025 |
| 1.21.10 | Paper, Spigot, Purpur | 21+ | declared | 7 Oct 2025 |
| 1.21.9 | Purpur, Spigot, Paper | 21+ | declared | 30 Sept 2025 |
| 1.21.8 | Purpur, Spigot, Paper | 21+ | declared | 17 Jul 2025 |
| 1.21.7 | Spigot, Purpur, Paper | 21+ | declared | 30 Jun 2025 |
| 1.21.6 | Spigot, Purpur, Paper | 21+ | declared | 17 Jun 2025 |
| 1.21.5 | Paper, Spigot, Purpur | 21+ | declared | 25 Mar 2025 |
| 1.21.4 | Purpur, Spigot, Paper | 21+ | declared | 3 Dec 2024 |
| 1.21.3 | Spigot, Paper, Purpur | 21+ | declared | 23 Oct 2024 |
| 1.21.2 | Purpur, Paper, Spigot | 21+ | declared | 22 Oct 2024 |
| 1.21.1 | Spigot, Purpur, Paper | 21+ | declared | 8 Aug 2024 |
| 1.21 | Paper, Spigot, Purpur | 21+ | declared | 13 Jun 2024 |
| 1.20.6 | Purpur, Spigot, Paper | 21+ | declared | 29 Apr 2024 |
| 1.20.5 | Purpur, Spigot, Paper | 21+ | declared | 23 Apr 2024 |
| 1.20.4 | Purpur, Spigot, Paper | 17+ | declared | 7 Dec 2023 |
| 1.20.3 | Purpur, Spigot, Paper | 17+ | declared | 4 Dec 2023 |
| 1.20.2 | Purpur, Spigot, Paper | 17+ | declared | 20 Sept 2023 |
| 1.20.1 | Purpur, Spigot, Paper | 17+ | declared | 12 Jun 2023 |
| 1.20 | Purpur, Spigot, Paper | 17+ | declared | 2 Jun 2023 |
Download
From Mod Observer Plugin’s own host. Nothing is re-hosted here.
For Minecraft 1.21.11
Choose the loader you use before downloading.
- Choose file on publisher ↗
Paper, Purpur
3.0.1 · 20 Aug 2025
Multiple loaders are listed; verify the file before downloading.
Most recently published release
ModObserverPlugin-2.1.1+mc1.20.x+.jar · 48 KB · for 1.20.6, 1.20.5, 1.20.4, 1.20.3, 1.20.2 +2 more · Paper, Purpur, Spigot
fea8d285b365…Older versions6Hide older versions
- 3.0.120 Aug 20251.21.11, 1.21.10, 1.21.9, 1.21.8, 1.21.744 KB763 downloads
f87c1e2e7fe2…Choose file on publisher ↗ - 3.0.018 Aug 20251.21.8, 1.21.743 KB55 downloads
e537ff6dc7c0…Choose file on publisher ↗ - 2.1.018 Jul 20251.21.6, 1.21.5, 1.21.4, 1.21.3, 1.21.2 +2 more47 KB81 downloads
11bba18ab20e…Get - 2.0.113 Jan 20251.21.3, 1.21.2, 1.21.1, 1.2147 KB161 downloads
931421eea55e…Choose file on publisher ↗ - 2.0.019 Nov 20241.21.3, 1.21.2, 1.21.1, 1.2147 KB94 downloads
44761b9293be…Choose file on publisher ↗ - 1.0.04 Jul 20241.20.6, 1.20.5, 1.20.4, 1.20.3, 1.20.2 +2 more46 KB162 downloads
00c321348f82…Choose file on publisher ↗
Frequently asked
Does Mod Observer Plugin work on Minecraft 1.21.11?
Yes. 1.21.11 is the newest Minecraft version Mod Observer Plugin declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.
Which Minecraft versions does Mod Observer Plugin support?
Everything the author has declared, from 1.20 up to 1.21.11. The full list is in the table above, with the Java runtime each version needs next to it.
Do I need to install Mod Observer Plugin on the client or the server?
The server only. Players join with an ordinary Minecraft client and install nothing.
Which platform or loader does Mod Observer Plugin support?
Spigot, Purpur, Paper. A build for one platform or loader will not necessarily load on another, so this is the first thing to check before the Minecraft version.
Which Java version do I need for Mod Observer Plugin?
Among the supported Minecraft releases above, the highest recorded requirement is Java 21 or newer. Use the requirement for the exact Minecraft version you run; previews and snapshots may differ.
What licence is Mod Observer Plugin under?
MIT, as stated by the author on the platform we synced it from. Check the project's own page before redistributing or bundling it.
How do I install Mod Observer Plugin?
Choose the release variant for your server platform. Paper, Spigot, Purpur and Bukkit files go in the server's plugins folder; Fabric, Forge, NeoForge and Quilt files go in the mods folder. Restart after installing and check that the Minecraft version matches your server.
Where do I download Mod Observer Plugin safely?
Start with the author's page on Modrinth, which is where the data here is synced from. MCReference does not host or repackage files. When available, recorded download links go to the source for that release; verify the publisher, filename and any available checksum before running it.
Works on the same versions
Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.
Is this information wrong or missing something? .