Vtgrep stands for Visual Tree Grep and is a GUI to tgrep. It allows the user to build graphical representations of tree structures and then translates them into the tgrep syntax. provides search functionality, as well as search and result logging.
The RainbowEiffel project aims to provide an Eiffel IDE (Integrated Development Environment) and associated libraries (GUI, database, etc.) for application development in Eiffel using SmartEiffel compiler on Win32 and Linux/UNIX platforms.
FOX is an Extensible C++ Class Library for Multi-Platform GUI development.
Platforms supported include Linux, Windows NT/9x/2K, and UNIX/X11 workstations
(IRIX, Solaris, HP-UX, Tru64, AIX, FreeBSD, and others).
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The purpose of this project is to create an Open Source portable GUI library for Eiffel. It started as the "translation" of the excellent GUI library named FOX from C++ to Eiffel, but I hope it'll become independent soon.