You can use this library in a C++ program to do arithmetic on integers of size limited only by your computer's memory. The library provides BigUnsigned and BigInteger classes that represent nonnegative integers and signed integers, respectively.

UnicodePlot provides the feature to make charts with Unicode characters.

Async is a modern concurrency framework for Ruby. It implements the reactor pattern, providing both non-blocking I/O and timer events.

Bring in livereload.js into handy Rack middleware.