Alternatives to Vortex
Official Nexus Mods manager that installs, sorts, and updates mods for hundreds of games. The listings below can replace it for an important use case. Each note says what changes if you switch.
The original
Vortex
Official Nexus Mods manager that installs, sorts, and updates mods for hundreds of games.
Replacements
Listings that take over the same core job as Vortex.
Mod Organizer 2
Power-user mod manager using a virtual file system, favored for Bethesda games.
Mod Organizer 2 is also free, open source and Windows only, using a virtual file system that leaves the game untouched, with a steeper learning curve and no Nexus-specific integration listed.
Similar software
Related functionality, not a direct replacement.
BepInEx
Open-source plugin and patching framework for modding Unity and XNA games.
MelonLoader
Universal open-source mod loader for Unity games built on IL2CPP or Mono.
ReShade
Generic post-processing injector adding shaders and effects to almost any game.