A free, portable, fast and simple C/C++ IDE
A new and improved fork of Bloodshed Dev-C++
Dev-PHP is a well-featured IDE for PHP. Fast and powerful, it is easy to use and has a lot of cool features : class browser, scripts preview, integration with PHP parsers, PHP-GTK library, and Xdebug of course. Dev-PHP-usb slips even into your pocket.
Geany is a small and lightweight integrated development environment. Basic features are syntax highlighting, code completion, code folding, call tips, many supported filetypes.