MultiMC_Launcher
1.0.0
Windows: Download mmc-cracked-win32.
Linux: Download mmc-cracked-lin64.
macOS (10.14 and newer): Download mmc-cracked-osx64.
To update the launcher replace all replaceable files and folders with the newer ones from any of the links listed above. Don't use the inbuilt option, as that downloads the MultiMC launcher instead (this will be fixed in a future version).
UltimMC
.In the case you're using macOS or Linux then another additional step is to make UltimMC
an executable by running the command chmod +x UltimMC.app/Contents/MacOS/UltimMC
in the terminal.
To remove "localhost:nnnn" or "Ely.by" from the Minecraft main menu and F3, add -Dauthlibinjector.noShowServerName
to the Java arguments in the UltimMC settings.