PhotoFlare - Quick, simple but powerful Cross Platform image editor.
Slidebean - Presentations that design themselves
showFoto - ShowFoto is the standalone image editor of the digiKam project.
BaseTemplates - The easiest way to build your pitchdeck and raise money
PhotoDemon - Lightweight portable BSD licensed photo editor for Windows focused on performance and usability.
Beautiful.AI - AI-powered presentation tool that makes it fast and easy for anyone to build clean, modern and professionally designed slides.