Apps with 'Multi panel' feature
nomacs is a small, fast image viewer able to handle the most common image formats including RAW images. Additionally it is possible to synchronize multiple viewers.
Multi-panel tabbed file and desktop manager with built-in VFS, udev- or HAL-based device manager, customisable menu system, and bash integration.
The concept of the "Sushi Browser" is wanting to utilize the screen to the maximum capacity just by a simple operation.
Its goal is to be as fantastic as sushi.