Photoflare
Photoflare – free and open source, fast and simple, but powerful cross-platform image editor
Photoflare – free and open source, fast and simple, but powerful cross-platform image editor
LazPaint – free and open source, cross-platform light editor of images with multiple tools and filters
LightZone – free and open source, multiplatform digital darkroom software and professional-level photo editor
RawTherapee is a free and open source, cross-platform raw image processing program
Darktable – free and open source cross-platform software for processing and cataloging RAW images
XnConvert is a fast, powerful and free cross-platform batch image converter, It allows to automate editing for your photos
Nomacs – free and open source multiple platforms fast image viewer with additional editing functionality
Fotoxx is a free open source Linux program for image editing and collection management
XnView MP – free and cross-platform, versatile and powerful software for viewing, organizing, and editing photos
RPhoto is a lightweight free and open source software for easy photo handling on Linux and Windows