Nomacs is a free, open source image viewer, which supports multiple platforms. Developed by Markus Diem, Stefan Fiel and Florian Kleber
License: Open Source
Geeqie is an efficient and lightweight image viewer with strong network capabilities and good metadata support, making it suitable for quick viewing and management of images. In contrast, Nomacs provides a more feature-rich environment with editing tools and plugin support, catering to users who need more functionality in their image management and editing tasks.