plugin
AltDetectorMinecraft plugin for 1.21
Detects players' alt accounts
- Latest version
- 2.04
- Minecraft
- 1.9 to 1.21
- Java
- Java 21+
- Platform
- Spigot
- Licence
- not stated
- Downloads
- 14.5k
- Updated
- 17 mo ago
- Available on
- SpigotMC
Our hostingHost AltDetector servers
One click and AltDetector is installed on a Paper or Purpur server built for it.
- 1.21
- Spigot
- One click plugin install
- Paper and Purpur ready
- Automatic updates
- NVMe SSD
Minecraft versions
Every version AltDetector declares support for, newest first, with the Java runtime that version needs.
| Minecraft | Through | Java | Evidence | Released |
|---|---|---|---|---|
| 1.21 | Spigot | 21+ | declared | 13 Jun 2024 |
| 1.20.6 | Spigot | 21+ | declared | 29 Apr 2024 |
| 1.20 | Spigot | 17+ | declared | 2 Jun 2023 |
| 1.19 | Spigot | 17+ | declared | 7 Jun 2022 |
| 1.18 | Spigot | 17+ | declared | 30 Nov 2021 |
| 1.17 | Spigot | 16+ | declared | 8 Jun 2021 |
| 1.16 | Spigot | 8+ | declared | 23 Jun 2020 |
| 1.15 | Spigot | 8+ | declared | 9 Dec 2019 |
| 1.14 | Spigot | 8+ | declared | 23 Apr 2019 |
| 1.13 | Spigot | 8+ | declared | 18 Jul 2018 |
| 1.12 | Spigot | 8+ | declared | 2 Jun 2017 |
| 1.11 | Spigot | 8+ | declared | 14 Nov 2016 |
| 1.10 | Spigot | 8+ | declared | 8 Jun 2016 |
| 1.9 | Spigot | 8+ | declared | 29 Feb 2016 |
Download
From AltDetector’s own host. Nothing is re-hosted here.
For Minecraft 1.21
Choose the loader you use before downloading.
No matching file appears among the releases shown here. Browse all releases.
Most recently published release
altdetector-spigot-4-2.04.jar · 0.3 MB
Older versions15Hide older versions
- 2.0318 Jun 20242.5k downloadsGet
- 2.0211 Apr 20232.6k downloadsGet
- 2.0115 Nov 2022889 downloadsGet
- 2.0012 Jan 20221.8k downloadsGet
- 1.1123 Nov 2021532 downloadsGet
- 1.108 Dec 20202.3k downloadsGet
- 1.091 Nov 2020260 downloadsGet
- 1.0826 May 2020622 downloadsGet
- 1.0716 May 2020189 downloadsGet
- 1.064 May 2020194 downloadsGet
- 1.051 May 2020126 downloadsGet
- 1.043 Aug 2019829 downloadsGet
- 1.031 Aug 2019101 downloadsGet
- 1.0210 Jun 2019108 downloadsGet
- 1.0017 Aug 2018141 downloadsGet
Frequently asked
Does AltDetector work on Minecraft 1.21?
Yes. 1.21 is the newest Minecraft version AltDetector 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 AltDetector support?
Everything the author has declared, from 1.9 up to 1.21. The full list is in the table above, with the Java runtime each version needs next to it.
Do I need to install AltDetector on the client or the server?
The server only. Players join with an ordinary Minecraft client and install nothing.
Which platform or loader does AltDetector support?
Spigot. 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 AltDetector?
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.
How do I install AltDetector?
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 AltDetector safely?
Start with the author's page on SpigotMC, 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? .