Xpra gives you the functionality of GNU Screen for X applications.

Vifm is a file manager providing a vi-like usage experience. It has similar keybindings and modes (e.g. normal, command line, visual). The interface uses ncurses, thus vifm can be used in text-only environments. It supports a wide range of features, some of which are known from the vi-editor: - utf8 support - user mappings (almost like in vi) - ranges in command-line commands - user defined commands (with support for ranges) - registers - operation undoing/redoing - fuse file systems support - trash - multiple files renaming - support of filename modifiers - colorschemes support - file name color according to file type - path specific colorscheme customization - bookmarks - operation backgrounding - customizable file viewers - handy less-like preview mode - filtering out and searching for files using regular expressions - one or two panes view With the package comes a plugin to use vifm as a vim file selector.

Firefox ESR is a powerful, extensible web browser with support for modern web application technologies.

Claws Mail is a powerful and full-featured mail client formerly called Sylpheed-Claws. It is also extensible using loadable plugins, which can provide support for additional features, like other storage formats, feed reader, calendar management, mail filtering, etc.

gbrainy is a platform to train memory, arithmetical and logical capabilities with many sorts of different exercises of different difficulty levels. It should have something for all ages and purposes: kids whose parents want them to develop their capabilities, adults that want to keep their mind in form or just try it out for fun, older people that might need to do some memory exercises, etc.

A real-time software synthesizer for Linux and Windows with many features, including polyphony, multi-timbral and microtonal capabilities. It includes randomness of some parameters, which makes warm sounds, like analogue synthesizers. It has system/insertion effects too, and much more.