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.
Kap - Kap is an open-source screen recorder built with web technology.
Piwigo.org - Manage your photo collection with Piwigo. Piwigo is open source photo gallery software for the web. Designed for organisations, teams and individuals.
Flux - Application Architecture for Building User Interfaces
novaGallery.org - Beautiful php image gallery - easy to use, with modern responsive design, private mode, themes, languages
KPhotoAlbum - KPhotoAlbum is a tool which you can use to easily sort your images.