A library for all of ISeal's plugins!
SealLib is a plugin for Paper / Spigot servers, made by ISeal. It supports Minecraft 1.19 – 1.21. It has been downloaded 74,822 times on Modrinth. That puts it at #32 of the 65 library and API plugins listed here. The last update came out on Sep 6, 2025.
How to install SealLib
Make sure your server runs Paper and Spigot on Minecraft 1.19 – 1.21.
Download the .jar file from Modrinth and put it in the plugins folder of your server.
Restart the server. Avoid /reload, many plugins do not handle it well.
Type /plugins in the console: SealLib should be listed in green. Its config files are created in the plugins folder on the first start.
Compatibility
- Minecraft versions
- 1.21, 1.20, 1.19
- Runs on
- Paper, Spigot
- Edition
- Java
- Needs
- Nothing else
- License
- CC BY
- Price
- Free
- Upkeep
- Actively updated (Nov 2, 2026)
SealLib compared with similar ones Compare all alternatives
| Resource | Downloads | Rating | Versions | Last update | Price |
|---|---|---|---|---|---|
| SealLibthe one you looked at | 75K | – | 1.19 – 1.21 | Sep 6, 2025 | Free |
 NightCoreNightExpress | 286K | – | 1.19 – 26.x | 23 days ago | Free |
 OtterLibOth3r | 227K | – | 1.20 – 26.x | Sep 30, 2026 | Free |
 WriteMisremEmberEd | 64 | – | 26.x | 17 days ago | Free |
Questions
Does SealLib work on Minecraft 26.x?
Not yet. The newest version it supports is Minecraft 1.21.
Is SealLib free?
Yes. SealLib is free to download from Modrinth.
Which server software does SealLib run on?
SealLib runs on Paper and Spigot servers.
Is SealLib still updated?
Yes. The last update came out in the past day.
What are the best alternatives to SealLib?
The closest ones are NightCore, OtterLib and Write. Compare all alternatives
Reviews
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