Selected open source projects that I created. See my GitHub and GitLab profiles for other projects. Besides that I contributed to many other open source projects inluding Jupyter/IPython, Debian, SciPy, NumPy, SageMath, Spack and others.
SymPy is a Python library for symbolic mathematics.
SymEngine is a fast symbolic manipulation library, written in C++
LFortran is a modern open-source interactive Fortran compiler built on top of LLVM.
Ab-initio derivations of physics equations that are needed for applications.
Best practices for modern Fortran.