Phototonic

Phototonic is a powerful photo organizer and viewer for Linux. It is a full-featured tool that allows you to manage and view your photos efficiently.

Phototonic features include:

- Simple and clear user interface

- Support for multiple photo layout models

- Integrated filtering feature

- Viewing images in slideshow mode

- Transformation options (rotation, Cropping, mirroring, scaling)

- Brightness, contrast and saturation adjustment menu

- Support for keyboard shortcut control

- Bookmarking of favorite images

Phototonic is free and open source. It is the perfect choice for anyone who needs an efficient way to manage and view their photos.