PARI/GP is a widely used computer algebra system designed for fast computations in number theory (factorizations, algebraic number theory, elliptic curves...), but also contains a large number of other useful functions to compute with mathematical entities such as matrices, polynomials, power series, algebraic numbers etc., and a lot of transcendental functions. PARI is also available as a C library to allow for faster computations.

Lazarus is an IDE to create (graphical and console) applications with Free Pascal, the (L)GPLed Pascal and Object Pascal compiler that runs on Windows, Linux, Mac OS X, FreeBSD and more.

pyside6 provides Python bindings for Qt 6.x framework.

Translate various input device events into keyboard and pointer events.

pyside6 provides Python bindings for Qt 6.x framework.

Pyaml-env is a very small Python3 library that parses a yaml configuration file and it resolves the environment variables, so that no secrets are kept in text.