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plugin

SealLibMinecraft plugin for 1.21.11

A library for all of ISeal's plugins!

server onlynewest supported 1.21.11Game MechanicsLibraryManagement
Latest version
1.2.0.1
Minecraft
1.19.4 to 1.21.11
Java
Java 21+
Platforms
Spigot, Paper
Licence
CC-BY-SA-4.0
Downloads
68.7k
Updated
12 mo ago
Available on
Modrinth
Space NodeOur hosting

Host SealLib servers

One click and SealLib is installed on a Paper or Purpur server built for it.

  • 1.21.11
  • Spigot
  • Paper
  • One click plugin install
  • Paper and Purpur ready
  • Automatic updates
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Minecraft versions

Every version SealLib declares support for, newest first, with the Java runtime that version needs.

Other plugins
MinecraftThroughJavaEvidenceReleased
1.21.11Spigot, Paper21+declared9 Dec 2025
1.21.10Spigot, Paper21+declared7 Oct 2025
1.21.9Paper, Spigot21+declared30 Sept 2025
1.21.8Spigot, Paper21+declared17 Jul 2025
1.21.7Spigot, Paper21+declared30 Jun 2025
1.21.6Spigot, Paper21+declared17 Jun 2025
1.21.5Spigot, Paper21+declared25 Mar 2025
1.21.4Spigot, Paper21+declared3 Dec 2024
1.21.3Spigot, Paper21+declared23 Oct 2024
1.21.2Paper, Spigot21+declared22 Oct 2024
1.21.1Spigot, Paper21+declared8 Aug 2024
1.21Spigot, Paper21+declared13 Jun 2024
1.20.6Paper, Spigot21+declared29 Apr 2024
1.20.5Spigot, Paper21+declared23 Apr 2024
1.20.4Paper, Spigot17+declared7 Dec 2023
1.20.3Spigot, Paper17+declared4 Dec 2023
1.20.2Spigot, Paper17+declared20 Sept 2023
1.20.1Paper, Spigot17+declared12 Jun 2023
1.20Spigot, Paper17+declared2 Jun 2023
1.19.4Spigot, Paper17+declared14 Mar 2023

Download

From SealLib’s own host. Nothing is re-hosted here.

1.2.0.1release5 Sept 2025

SealLib-1.2.0.1.jar · 0.9 MB · for 1.19.4, 1.20, 1.20.1, 1.20.2

Download latest
48b2600b6afa…
Older versions11
  • 1.2.0.015 Aug 20251.19.4, 1.20, 1.20.1, 1.20.2, 1.20.30.9 MB2.5k downloads96e334fd3443…Get
  • 1.1.3.128 Jun 20251.20.1, 1.20.2, 1.20.3, 1.20.4, 1.20.514.9 MB5.5k downloads09955feec502…Get
  • 1.1.2.118 Apr 20251.19.4, 1.20, 1.20.1, 1.20.2, 1.20.36.7 MB10.4k downloads23f0d1234bd7…Get
  • 1.1.2.017 Apr 20251.19.4, 1.20, 1.20.1, 1.20.2, 1.20.36.7 MB441 downloadsdd8137488f28…Get
  • 1.1.1.312 Mar 20251.20.1, 1.20.2, 1.20.3, 1.20.4, 1.20.56.7 MB4.7k downloads4b05d88aea73…Get
  • 1.1.1.212 Mar 20251.20.1, 1.20.2, 1.20.3, 1.20.4, 1.20.56.7 MB220 downloads5a81407bc812…Get
  • 1.1.1.110 Mar 20251.20.1, 1.20.2, 1.20.3, 1.20.4, 1.20.56.7 MB419 downloads0ca2ded14a2b…Get
  • 1.1.1.09 Mar 20251.20.1, 1.20.2, 1.20.3, 1.20.4, 1.20.56.7 MB629 downloadsddc144bf05b1…Get
  • 1.1.0.010 Jan 20251.19.4, 1.20, 1.20.1, 1.20.2, 1.20.36.7 MB6.3k downloadsff83c4d668f9…Get
  • 1.0.1.030 Oct 20241.19.4, 1.20, 1.20.1, 1.20.2, 1.20.31.6 MB8.4k downloads2d259f6a90b0…Get
  • 1.0.0.026 Oct 20241.19.4, 1.20, 1.20.1, 1.20.2, 1.20.31.6 MB577 downloads69d907268477…Get

Frequently asked

Does SealLib work on Minecraft 1.21.11?

Yes. 1.21.11 is the newest Minecraft version SealLib 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 SealLib support?

Everything the author has declared, from 1.19.4 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 SealLib on the client or the server?

The server only. Players join with an ordinary Minecraft client and install nothing.

Which server software does SealLib need?

Spigot, Paper. A build for one server platform will not load on another, so this is the first thing to check before the Minecraft version.

Which Java version do I need for SealLib?

On the newest Minecraft release it supports, Java 21 or newer. The requirement comes from the Minecraft version you run rather than from the plugin itself, so on an older supported Minecraft the answer is that version's Java, not this one.

What licence is SealLib under?

CC-BY-SA-4.0, 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 SealLib?

Download the file from the author's own release, drop it into your server's plugins folder, and restart the server. It generates its configuration on first start. Check the Minecraft version matches the one your server runs.

Where do I download SealLib safely?

From the author's own page on Modrinth, which is where the data here is synced from. MCReference never mirrors, re-hosts or repackages a file: every download button points at the original source, so you get exactly what the author published.

Works on the same versions

Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.

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Last checked 2 mo ago against Modrinth. We do not host files and we do not republish descriptions; every download link points at the author’s own release.

Is this information wrong or missing something? .