ATLauncher vs UltimMC
| ATLauncher | UltimMC | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | No | No |
| Paid from | Free | — |
| Open source | No | No |
| Platforms | Linux, macOS, Windows | Windows, macOS, Linux |
| 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 | — | No |
Both are listed in Best Minecraft Launchers. On VGSources, ATLauncher scores higher on our published basis.