Piwigo.org - Manage your photo collection with Piwigo. Piwigo is open source photo gallery software for the web. Designed for organisations, teams and individuals.

dupeGuru - dupeGuru is a tool for finding duplicate files on your computer.

PhotoPrism.app - PhotoPrism® is an AI-Powered Photos App for the Decentralized Web. It makes use of the latest technologies to tag and find pictures automatically without getting in your way. You can run it at home, on a private server, or in the cloud.

AllDup - AllDup is a freeware tool for searching and removing file duplicates on your Windows computer.

novaGallery.org - Beautiful php image gallery - easy to use, with modern responsive design, private mode, themes, languages

Czkawka - Multi functional app to find duplicates, empty folders, similar images etc.