r/fabricmc

We're happy to announce the release of our latest mod in the Sinytra ecosystem, Launchpad!

Launchpad is a small tool aimed at Fabric developers that lets you bring your mod to NeoForge without writing any platform-dependent code. Your mod metadata, entrypoints, class tweakers, registration code etc. stay the same.

When the game starts, Launchpad automatically discovers installed compatible fabric mods and loads them into neoforge as if they were written natively for the loader. At a glance, it is similar to Connector, but it does not make any changes to your mod on its own and requires explicit opt-in from the mod developer.

It's perfectly suited for modders who were considering using Connector to make their mod compatible with NeoForge, but were worried about the potential side-effects it might come with. Launchpad gives you full control over changes made to your mod and has effectively no runtime overhead.

At the same time, Launchpad's release is yet another step towards our upcoming Connector port. By separating the base locator and loader code into its own project, we provide mod devs with a lightweight solution and also improve its stability through automated tests and a smaller test surface. The Connector port is nearly done and at the moment we're mainly focusing on testing mods for compatibility. More on that in a later post!

Also huge thanks to u/MoriyaShiine for testing this early and finding many of my stupid bugs.

Modrinth: https://modrinth.com/mod/launchpad
CurseForge: https://www.curseforge.com/minecraft/mc-mods/launchpad
GitHub: https://github.com/Sinytra/Launchpad

Please report any issues you find on our issue tracker or chat with us on discord.

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If you maintain plugins (or a pile of them across every major server upgrade) this might save you some time: MinecraftJarMigrator is an open-source tool that ports plugin jars between Minecraft versions - remaps, decompiles, patches known breaking changes, recompiles.



For Paper/Spigot specifically it also:

- Patches plugin.yml's api-version automatically

- Auto-downloads the vanilla server jar + Paper/Spigot API for the target version so recompilation actually has a classpath to work against

- Has a --verify flag that boots a real headless server with your migrated plugin dropped in and tells you loads: yes/no - instead of finding out at 2am when the server won't start

- Batch mode: point it at a folder of plugin jars, get one HTML report with jar × confidence × loads for the whole set



It's not going to fix a plugin that leans on NMS internals the new version removed entirely - that still needs a human. But for the "API renamed a method, bump this from 1.20 to 1.21" grind, it's saved me a bunch of time.



MIT, source here: [https://github.com/lilqbite-svg/MinecraftJarMigrator]. Happy to take bug reports if you throw something weird at it.If you maintain plugins (or a pile of them across every major server upgrade) this might save you some time: MinecraftJarMigrator is an open-source tool that ports plugin jars between Minecraft versions - remaps, decompiles, patches known breaking changes, recompiles.For Paper/Spigot specifically it also:- Patches plugin.yml's api-version automatically- Auto-downloads the vanilla server jar + Paper/Spigot API for the target version so recompilation actually has a classpath to work against- Has a --verify flag that boots a real headless server with your migrated plugin dropped in and tells you loads: yes/no - instead of finding out at 2am when the server won't start- Batch mode: point it at a folder of plugin jars, get one HTML report with jar × confidence × loads for the whole setIt's not going to fix a plugin that leans on NMS internals the new version removed entirely - that still needs a human. But for the "API renamed a method, bump this from 1.20 to 1.21" grind, it's saved me a bunch of time.MIT, source here: [https://github.com/lilqbite-svg/MinecraftJarMigrator]. Happy to take bug reports if you throw something weird at it.

Tool that migrates Paper/Spigot plugins between MC versions and actually boots a test server to check they load

Been working on this solo for a while. It swaps vanilla villager AI for handwritten behavior code. No ChatGPT or anything online, it's regular game AI logic like any other mod, so it runs offline and can't make stuff up.

What villagers actually do now: work jobs and get better at them, build houses (with doors, which took me embarrassingly long to get right), farm, mine, marry, raise kids, hold elections, form factions, and bury their dead in a small graveyard at the village edge. They remember how you treat them. Punch one and its family hears about it. Feed one during a famine and it remembers that too.

Left alone they keep themselves alive. Food, shelter, torches, a night watch. My first test village lost half its people in one night. The current version came out of that same test 24 out of 24 alive.

Weirdest thing I've seen it do: one villager walked over and sat with a neighbor who had just lost someone. I didn't code that, it fell out of the grief and empathy systems interacting.

Free, Fabric 1.21.4, beta, so expect some jank. Happy to answer anything.

https://modrinth.com/mod/sapience

Hey everyone,

I’ve been working on a small performance-focused modpack called **Helios** for Minecraft 1.21.8 (Fabric).
The goal was simple: make Minecraft run smoother on low-end PCs, laptops, and especially **PojavLauncher** without changing the vanilla look or relying on heavy render mods.

Helios is extremely lightweight — just modern optimizers, no visual changes, no Sodium/Vulkan stuff, nothing that breaks mobile.
It’s built to stay stable, load fast, and give a noticeable FPS boost even on weak devices.

If you play on low-end hardware or on your phone, you might actually feel the difference right away.

What Helios focuses on:

• smoother chunk loading
• reduced RAM usage
• better frame pacing
• GPU-side improvements
• full vanilla compatibility
• works on any server

I’m sharing it here because I know a lot of people struggle with performance, especially on mobile.
If you want to try it, here’s the Modrinth link:

👉 https://modrinth.com/modpack/heliosfps

If you do test it, I’d love to hear how it runs on your device.

I want to make my Minecraft world look like this, but I don't want to use shaders because they change the way Minecraft's lighting works. I saw someone achieve this with a resource pack by modifying how OpenGL renders the world changing it to curvature. Does anyone know how to do this?

This mod is available here:
https://www.curseforge.com/minecraft/modpacks/celestial-expedition-create-aeronautics
mod:
https://www.curseforge.com/minecraft/mc-mods/adorable-hamster-pets

I'm very new with making modpacks, modding mc, etc. I can open the launcher from forge but i can't load my worlds. I also increased forge's ram. I really don't know what SemVer is lol.

It seems it's only effecting me and my friends arent having issues. And my brother isnt either. Also list of mods in the comments