digiKam is a free and open-source image organizer and tag editor written in C++ utilizing the KDE Platform.
License: Open Source
Adobe Photoshop Lightroom is a powerful, subscription-based application known for its editing capabilities and cloud integration, making it ideal for professional photographers. In contrast, digiKam is a free, open-source alternative that excels in image organization and tagging but lacks some advanced editing features and seamless integration with other software.