CatMap lets anyone drop a cat sighting on a world map with a photo and location, no account needed. Explore sightings near you, confirm spots others have pinned, and help build a global map of the world's cats. Completely anonymous and free.
TimeTracker is a free, open-source time tracking app you self-host in 5 minutes with Docker. Track time, manage projects, generate PDF invoices, log expenses, and collaborate with teams, all on your own server. No per-seat fees, no vendor lock-in.