Limo is a general-purpose mod manager for games and other applications.
Built-in support for the Load Order Optimization Tool (LOOT) allows modding various Bethesda titles such as Skyrim or Fallout 4.

Features:

• Multiple target directories per application
• Automatic adaptation of mod file names to prevent issues with case mismatches
• Auto-Tagging system for filtering
• FOMOD support
• Sort load order according to conflicts
• Import installed games from Steam
• Simple backup system
• LOOT integration
• NexusMods API support
• Baldur's Gate 3 support

For a guide on how to set up Limo, refer to the GitHub wiki page.