Nomacs is a free, open source image viewer, which supports multiple platforms. Developed by Markus Diem, Stefan Fiel and Florian Kleber
License: Open Source
Nomacs is a free, open-source image viewer that offers basic editing features and supports various formats, making it suitable for users looking for a lightweight tool. Picasa, while user-friendly and powerful for organizing photos, is no longer actively developed, which may limit its appeal for users seeking ongoing support and updates.