Onyx Launcher vs UltimMC
| Onyx Launcher | UltimMC | |
|---|---|---|
| Free plan | Yes | Yes |
| Free trial | No | |
| Paid from | Free | Free |
| Platforms | Linux, Windows | Linux, macOS, Windows |
| Free plan | Yes | |
| Separate instances | Yes | Yes |
| Modpack import | both | |
| Mod loader support | multiple | |
| Java runtime management | Yes | |
| Built-in modpack catalog | Yes | |
| Automatic updates | Yes | No |
Listed together in Best Minecraft Launchers