FOX is a C++-based library for graphical user interface development.

FOX supports modern GUI features such as drag-and-drop, tooltips, tab
books, tree lists, icons, multiple document interfaces (MDI), timers,
idle processing, automatic GUI updating, as well as OpenGL/Mesa for 3D
graphics. Subclassing of basic FOX widgets allows for easy extension
beyond the built-in widgets by application writers.

X File Explorer (Xfe) is a filemanager for X. It is based on the
popular X Win Commander, which is discontinued. Xfe is desktop
independent and is written with the C++ Fox Toolkit. It has Windows
Commander or MS-Explorer look and is very fast and simple. The main
features are: file associations, mount/umount devices, directory tree
for quick cd, change file attributes, auto save registry, compressed
archives view/creation/extraction and much more.

Authors:
--------
Roland Baudin

GNUstep provides a robust implementation of the AppKit and Foundation libraries
as well as the development tools available on Cocoa, including Gorm (the
InterfaceBuilder) and ProjectCenter (ProjectBuilder/Xcode).

"Lightweight X11 Desktop Environment", is an extremely fast, performing and energy saving desktop environment. It is maintained by an international community of developers and comes with a beautiful interface, multi-language support, standard keyboard short cuts and additional features like tabbed file browsing. LXDE uses less CPU and less RAM. It is especially designed for cloud computers with low hardware specifications like netbooks, mobile devices (e.g. MIDs) or older computers. LXDE can be installed with distributions like openSUSE. It provides a fast desktop experience connecting easily with applications in the cloud. LXDE supports a wealth of programs, that can be installed with Linux systems locally. The source code of LXDE is licensed partly under the terms of the General Public License and partly under the LGPL.

Note: This project is no longer maintained, if you are interested in maintaining it then contact jigish.gohil at gmail.com

Sugar is the core of the OLPC Human Interface. Its goal is to turn the Laptop into a fun, easy to use, social experience that promotes sharing and learning.

Sugar reinvents how computers can be used for education. Sugar promotes sharing, collaborative learning, and reflection. Through Sugar's clarity of design, children and their teachers have the opportunity to use computation on their own terms; they are free to reshape, reinvent, and reapply both software and content into powerful learning activities. Sugar is a community project; it is based on GNU/Linux, a free and open-source operating system.