GarryPassarella 

A tiny, fast and rich Javascript LINQ-like library for working with collections. Barely 8KB minified, over 60 functions, highly optimized for performance. Works with browsers back to IE6.

My package description.

A simple Javascript benchmarking library for comparing the performance of Javascript functions.

Create single and multi-layer perceptrons and configure and run genetic algorithms to solve complex optimization problems.

Very simple package with just one command. Runs a DOS command and returns the output as a string, just as you would from command line but in C# code.

A flexible general purpose component for use in MVC views for easily displaying tabulated data.