PhotoFlare - Quick, simple but powerful Cross Platform image editor.
Framer - 🔥 Design real websites right on the canvas.
showFoto - ShowFoto is the standalone image editor of the digiKam project.
Base UI Sketch Framework - Huge set of everything you need to design and prototype
PhotoDemon - Lightweight portable BSD licensed photo editor for Windows focused on performance and usability.
Supernova V4 - Turn Sketch into iOS, Android and React Native in minutes