ASTRA Resources on Mathematics

• DIMACS, the Center for Discrete Mathematics and Theoretical Computer Science
• GAP, a system for computational group theory
• GNU Octave, mostly compatible with MatLab
• History of Mathematics
• MathWorks, developers of MatLab
• On-Line Encyclopedia of Integer Sequences
• SageMath, a free open-source mathematics software system
• Wolfram Research, developers of Mathematica
• World of Mathematics