MossyLib
by LopyMine
MossyLib gives the mods of its author a shared set of utilities and a YACL configuration theme, and it is client-side only.
What it does
MossyLib is a library mod from LopyMine that provides basic utilities for other projects from the same author. Its code is written once for several loaders, so the same source supports Fabric, Forge and NeoForge. Fabric API is required, and Mod Menu and YetAnotherConfigLib (YACL) are optional.
The mod is client-side only, so servers do not need it and players are the only ones who install it. Files are published for game versions 1.20.1 – 26.3 across 15 release versions, with Fabric, Forge and NeoForge builds. The latest files are 1.6.0+26.3+fabric for 26.3 and 1.6.0+1.20.1+forge for 1.20.1, both dated 2026-09-21. Thirteen other mods require it, among them Inventory Particles, Collision Fix, Inventory Interactions, Bathymetry and Emotecraft: Borrow Their Emote (EBTE). The mod is released under the Creative Commons Attribution No Derivatives 4.0 license and is not open source, though its source code, issue tracker and wiki are public.
Key features
Shared utilities
A set of helper code that other projects by the same author draw on instead of carrying their own copies.
YACL theme
A configuration screen theme built on YetAnotherConfigLib that gives related mods a common look.
Snapshot builds
Builds are published for snapshot versions such as 26.1, 26.2 and 26.3, alongside the release line.
Gallery
Compatibility
Latest build for each game version and loader.
26.x5 of 5 versions with builds
1.21.x9 of 9 versions with builds
1.20.x1 of 1 version with builds
This mod also publishes snapshot builds. Snapshots are not shown in the matrix.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Optional 2
Required by 13 mods
Use cases
Developers of related mods
Developers whose projects depend on the utilities and theme keep their own mods consistent with one another.
Players of dependent mods
A player who runs one of the thirteen dependent mods needs this library on the client for it to load.
Who it’s for: Players who run a dependent mod that lists this library as a requirement, and developers who want the shared utilities and YACL theme in their own projects.
How it compares
CRM is a Fabric-only mod that is client-side only and open source under the GNU General Public License v3.0 only, for 1.20.1 – 26.1.2. Pufferfish API covers Fabric, Forge and NeoForge with a client and server environment and an MIT License for 1.20.6 – 26.3, so it reaches more loaders but also needs installing on the server. MossyLib differs by being client-side only and not open source, with a license that bars derivatives.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| MossyLib | Fabric, Forge and NeoForge | 1.20.1 – 26.3 | Client-side only | 2026-09-21 |
| CRM | Fabric | 1.20.1 – 26.1.2 | Client-side only | 2026-09-26 |
| Pufferfish API | Fabric, Forge and NeoForge | 1.20.6 – 26.3 | Client and server | 2026-09-21 |
Questions
Does MossyLib need Fabric API?
Does a server need MossyLib?
Is the YACL theme required?
In the catalog
MossyLib is one of 3,514 Library mods on ModsFinder, and one of 2,348 Library mods for Fabric. 8,071 mods support Minecraft 26.3.
More from LopyMine
Similar mods
Official listing
- Modrinth page
- modrinth.com/mod/mossylib
- Owner
- LopyMine
- Published
- 2025-09-24
- Updated on Modrinth
- 2026-09-21
- Facts verified
- 2026-10-15
