IMSL (International Mathematics and Statistics Library) is a commercial collection of software libraries of numerical analysis functionality that are implemented in the computer programming languages C, Java, C#.NET, and Fortran.

Several recent product releases have involved making IMSL Library functions available from Python.

These releases are Python wrappers to IMSL C Library functions (PyIMSL wrappers) and PyIMSL Studio, a prototyping and production application development environment based on Python and the IMSL C Library.

PyIMSL Studio is available for download at no charge for non-commercial use or for commercial evaluation.

Current versions: The IMSL Numerical Libraries are supported on various operating systems, hardware, and compilers.