https://github.com/luandev/jacare
Open source / free

Jacare (Portuguese for "caiman") is a powerful desktop ROM library manager that brings your retro game collection to life. Built with Electron, Express, and React, Jacare combines the best of local-first architecture with cloud-powered metadata—giving you a single, unified experience to discover, organize, and launch games from your personal library.

https://i.redd.it/jz0x5g4dfu8g1.gif

What makes Jacare special:

  • 🎮 All-in-one solution – Browse, search, download, and launch ROMs without switching between tools
  • 🏠 Your data, your control – Everything stays on your machine; metadata is fetched from Crocdb but cached locally for offline access
  • ⚡ Built for performance – Background job processing, real-time SSE updates, and intelligent caching keep things fast
  • 🔄 Smart synchronization – Automatic scanning, metadata enrichment, and library management keep your collection organized