Good news for Linux users. The KontrollerLab team is announcing the 0.7.0 version of KDE based microcontroller IDE. Besides some bug fixes, there are new features implemented, such as a LCD wizard, a wizard for painting user-defined characters on LCDs, and a seven segments display wizard. Additionally, there are binary packages for (K)Ubuntu and Fedora Core 5 and 6 available for download from the project's sourceforge website
KontrollerLab is GPL and fully-featured editor which includes serial terminal for debugging, uses AVR-GCC compiler, uisp for serial downloading and avrdude programming software.