PineconeMC

PineconeMC (previously known as ElyPrismLauncher) is a custom, open-source Minecraft launcher that allows users to easily manage multiple installations of Minecraft at once. As a direct fork of Prism Launcher, it retains all of the powerful instance, modpack, and performance management features of its parent project, with the major addition of integrated support for Ely.by accounts. It features secure OAuth2 logins so your credentials are never transferred directly to the launcher, and it uses Ely.by's official Authlib patches so players can view their custom skins on any server.