mod
Cosmos LibraryMinecraft mod for 1.21.1
Main required library for the mods in The Cosmos Series.
- Latest version
- 11.11.9.0
- Minecraft
- 1.20.1 to 1.21.1
- Java
- Java 21+
- Loaders
- Forge, NeoForge
- Licence
- LicenseRef-All-Rights-Reserved
- Downloads
- 36.7k
- Updated
- 5 mo ago
- Available on
- Modrinth
PartnerHost Cosmos Library servers
One click and Cosmos Library is installed with the right loader, on hardware built for it.
- 1.21.1
- Forge
- NeoForge
- One click mod install
- Loader matched for you
- Ryzen CPUs
- NVMe SSD
Minecraft versions
Every version Cosmos Library declares support for, newest first, with the Java runtime that version needs.
Download
From Cosmos Library’s own host. Nothing is re-hosted here.
cosmoslibrary-neoforge-1.21.1-11.11.9.0.jar · 1.6 MB · for 1.21.1
637458afd4d4…Older versions18Hide older versions
- 11.11.8.07 Feb 20261.21.11.6 MB869 downloads
455b450fd9c6…Get - 11.11.7.029 Jan 20261.211.6 MB1.0k downloads
a74cc92cf030…Get - 11.11.6.016 Jan 20261.21.11.6 MB540 downloads
0c735a91cf67…Get - 11.11.5.06 Aug 20251.21.11.6 MB2.5k downloads
2a85b0446678…Get - 11.11.4.012 Apr 20251.21.11.6 MB2.2k downloads
918a09a9c072…Get - 11.11.0.011 Apr 20251.21.11.6 MB62 downloads
31e4510fc6ba…Get - 11.10.0.09 Apr 20251.21.11.6 MB67 downloads
f0ad0f43c8c9…Get - 11.9.10.028 Mar 20251.21.11.6 MB326 downloads
078034ec6379…Get - 11.9.0.020 Mar 20251.21.11.6 MB132 downloads
09679beaaca5…Get - 11.8.0.020 Mar 20251.21.11.6 MB45 downloads
a2b1af5ea64b…Get - 11.7.0.09 Mar 20251.21.11.6 MB99 downloads
47f0fab3b72d…Get - 11.6.0.010 Jan 20251.21.11.6 MB287 downloads
894bc52f5824…Get - 11.5.0.031 Dec 20241.21.11.6 MB79 downloads
e79943a4bb35…Get - 11.4.41.015 Dec 20241.21.11.6 MB76 downloads
fd996b159057…Get - 11.4.0.014 Dec 20241.21.11.6 MB54 downloads
355ab0ff2a78…Get - 11.3.0.013 Dec 20241.21.11.6 MB101 downloads
2f8878ba482b…Get - 11.0.0.07 Dec 20241.21.11.6 MB61 downloads
be7aa2f3a1fc…Get - 10.6.0.02 Dec 20241.20.11.5 MB25.5k downloads
94b3a990b85d…Get
Frequently asked
Does Cosmos Library work on Minecraft 1.21.1?
Yes. 1.21.1 is the newest Minecraft version Cosmos Library 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 Cosmos Library support?
Everything the author has declared, from 1.20.1 up to 1.21.1. The full list is in the table above, with the Java runtime each version needs next to it.
Do I need to install Cosmos Library on the client or the server?
Both. Every player needs it installed and so does the server, so anyone joining without it will be refused.
Which loader does Cosmos Library need?
Forge, NeoForge. A build for one loader will not load on another, so this is the first thing to check before the Minecraft version.
Which Java version do I need for Cosmos Library?
Java 21 or newer, because that is what the newest Minecraft release it supports requires. The requirement comes from the game rather than from the mod itself.
What licence is Cosmos Library under?
LicenseRef-All-Rights-Reserved, 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 Cosmos Library?
Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.
Where do I download Cosmos Library 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.
Is this information wrong or missing something? .