计算机代数系统，强大的表达式计算命令行工具源代码-This is the source code of the computer algebra system FORM. It is commonly used in High Energy Physics and Particle Physics to calculate the Dirac algebra and loop integrals analytically.

著名计算机代数系统maxima早期版本源代码-This is the source code of the famous Computer Algebra System (CAS) Maxima.