http://julialang.org : A fresh approach to technical computing.
Solving differential equations in Julia
Fast math typesetting for the web.
math and logic formula parser and evaluator
A gitter chat bot that solves simple math stuff
A struct that represents an angle in .NET
Gitter robot for math expressions
General discussion room about Zero-knowledge proofs.
Delicious math for PHP
Public room for finding new social contacts in cryptography
Collaborative markdown with math
Theorems ~ Proofs ~ LaTeX ~ https://github.com/chakravala/Math-Research-Notes
Numerics.NET is a library to support obscure operations and convenience methods pertaining to numbers.