Projects using Cython
Sage math software
lxml XML processing library
yacairo yet another cairo binding (alpha)
CDS Invenio CERN Document Server Invenio
Python-EFL Python-EFL (under e17/proto/python-efl)
Plasticity Synaptic Modification in Rate-Based Neurons (simulation package)
GIPSY Interactive package for the processing and display of astronomical data
Tuke an electrical design automation library
WorldMill GIS geospatial feature interface
mpi4py MPI for Python
petsc4py PETSc for Python
slepc4py SLEPc for Python
tao4py TAO for Python
Crux Software toolkit for molecular phylogenetic inference
Kapteyn Package Tools for astronomy (WCS, map plotting, and more)
- others...