Complex sentence: Among the founders of the Inkscape project, he is also a contributor to projects such as gtkmathview, matplotlib, the organ simulator aeolus, and is maintainer of The Circle and libaffa, a C++ library for computing affine arithmetic.
Split into simpler sentences: Among the founders of the Inkscape project, he also contributes to projects such as gtkmathview, matplotlib, and the organ simulator aeolus. He maintains The Circle and libaffa, a C++ library for computing affine arithmetic.