Beaver is an Early AdVanced EditoR, for Linux, Unix and Windows. It is licensed under the GNU GPL and intended to be lightweight, but contain of useful features for programming, from website editing to programming. It is based upon the GTK+ 2 toolkit, supports various languages through config files and offers functions such as automatic indentation, completion and correction, as well as syntax highlighting. It also has its own mini macro language.

Beaver homepage (http://www.nongnu.org/beaver/)