KDevelop

KDevelop is a free software integrated development environment for the KDE desktop environment for Unix-like computer operating systems. KDevelop does not include a compiler; instead, it uses an external compiler such as gcc to produce executable code.

The current version, 3.5, supports many programming languages such as Ada, Bash, C, C++, Fortran, Java, Pascal, Perl, PHP, Python and Ruby. Released under the GNU General Public License, KDevelop is free software.