JarJar
by mitchej123
JarJar is a Forge 1.7.10 optimization mod that changes how the loader finds and loads mods, including nested jars packed inside other jars.
What it does
JarJar adds support for nested jars, meaning a mod jar can carry other jars inside it and have them loaded along with it. Its discovery code also picks the latest version of a coremod or mod when several copies are found, so duplicate builds do not both load. The mod depends on lwjgl3ify, which must be installed alongside it.
The changes target the Forge Mod Loader startup path for Minecraft 1.7.10. A parallel mod discoverer speeds up scanning the mods folder, and the ASMDataTable captures interfaces in the way later FML and Forge versions do. A set of speedups drawn from CoreTweaks and newer FML and Forge builds is also included. Coremod loading gains an RFB plugin that improves FML 1.7.10 itself.
Files are published for Forge only, for the single game version 1.7.10, with 0.3.7-beta as the latest file, released 2026-06-18. Either side can run it, and neither needs it. The code is open source under the GNU Lesser General Public License v3.0 only.
Key features
Nested jar loading
Mod jars can include other jars inside them, and those nested jars are loaded as part of the outer mod.
Latest version selection
When several copies of a coremod or mod are found, the newest one is loaded instead of all of them.
Parallel mod discovery
Scanning the mods folder runs in parallel to shorten the time the loader spends finding mods at startup.
Startup speedups
Several optimizations from CoreTweaks and newer Forge builds are bundled to reduce work during loading.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Use cases
Mod packs with many jars
Packs that ship many mods, or mods that bundle libraries inside their jars, can start with fewer loading problems.
Slow startup on large packs
Players whose loader spends a long time scanning the mods folder can use the parallel discoverer to cut that time.
Who it’s for: Players and modpack makers running Forge 1.7.10 who want faster mod discovery and support for nested jars. Server owners can add it to the server as well, since it is optional on both sides.
Questions
What does JarJar require?
Does JarJar have to be installed on the server?
Which version of JarJar should be used?
In the catalog
JarJar is one of 3,545 Optimization mods on ModsFinder, and one of 1,441 Optimization mods for Forge. 1,013 mods support Minecraft 1.7.10.
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Official listing
- Modrinth page
- modrinth.com/mod/jarjar
- Owner
- mitchej123
- Published
- 2025-03-08
- Updated on Modrinth
- 2026-06-18
- Facts verified
- 2026-10-15