LabyMod vs Onyx Launcher

LabyMod 4 is a Minecraft Java Edition client that bundles more than 100 mods into one installation. Its launcher manages multiple instances and game versions, switches accounts, and can start LabyMod, vanilla Minecraft, Forge, Fabric, and other modloaders. A browser covers CurseForge, Modrinth, and more; users can build modpacks or import instances from other launchers. The client supports more than 20 Minecraft Java Edition versions, from 1.8.9 through the current release. Players can choose Fancy or classic Vanilla themes and customize screens. Proximity Voice offers positional audio, push-to-talk or voice activation, and private voice channels without server plugins. The server list includes HD icons and backgrounds, quick join, folders, and live player counts and status. Users can invite friends into a singleplayer world without configuring a server or port forwarding; the product page says the host IP stays protected. The client is free for Windows, macOS, and Linux, but requires a genuine Microsoft Minecraft Java Edition account. A separate iOS and Android app manages profiles, streaks, LabyCoins, and cosmetics; the client itself has no official mobile version.

Onyx Launcher is a free, open-source desktop Minecraft launcher for Windows and Linux. It manages separate instances, imports modpacks and supports Fabric, NeoForge, Forge, Quilt and Vanilla. A built-in Modrinth catalog lets users browse, install and update mods and modpacks, while automatic updates and Java runtime management are included. Onyx can detect, download and isolate Eclipse Temurin Java 8, 17 or 21 as needed. Diagnostic features measure in-game FPS, average frame times and stutters, analyze logs, track memory and garbage-collection pauses, and use Crash Bisect to look for conflicting mods through controlled launches. World Guard creates safety snapshots before risky operations and supports rollbacks. Ghost Mode unloads the launcher window, WebContents and GPU processes from memory when Minecraft starts. Microsoft sign-in uses OAuth Device Flow, and offline mode with custom skins is available. Windows builds are currently unsigned; published SHA-256 checksums can be checked. The MIT-licensed project says it is independent of Microsoft, Mojang Studios and Modrinth.