Lybniz
Lybniz is an easy to use mathematical function graph plotter using pyGTK.
The main place to get information about Lybniz is https://sourceforge.net/projects/lybniz2/
Requirements
Python >= 2.4
PyGTK >= 2.6
Running Lybniz
Lybniz can be started with the command
./lybniz.py
in the directory you downloaded it to.