Leafpad is a simple GTK+ text editor that emphasizes simplicity.

PyGTKEditor is a text editor with a small screen footprint, fast syntax highlight for Python and PyGTK, fullscreen capable, regulars expressions search and many more.

Mainly designed for onboard python developpers, it can open any text file, and highlight syntax for c/c++/latex, and of course python.

VIM, the hardcore text editor. This package supports syntax highlighting, xterm mouse, spell checking, online help, UTF-8, etc.

Nano, the tiny text editor. Needs xterm/ssh.

Xournal is an application for note taking, sketching, keeping a journal using a stylus.

Joe is a full featured terminal-based editor.