jakara

oxyplot

A cross-platform plotting library for .NET

efcore

EF Core is a modern object-database mapper for .NET. It supports LINQ queries, change tracking, updates, and schema migrations.

progit2-zh

ILSpy

.NET Decompiler with support for PDB generation, ReadyToRun, Metadata (&more) - cross-platform!

jquery.fileDownload

jQuery File Download is a cross server platform compatible jQuery plugin that allows for an Ajax-like file download experience that isn’t normally possible using the web.

jQuery-File-Upload

File Upload widget with multiple file selection, drag&drop support, progress bar, validation and preview images, audio and video for jQuery. Supports cross-domain, chunked and resumable file uploads. Works with any server-side platform (Google App Engine, PHP, Python, Ruby on Rails, Java, etc.) that supports standard HTML form file uploads.

folly

An open-source C++ library developed and used at Facebook.

SignalR

Incredibly simple real-time web for .NET

three.js

JavaScript 3D Library.

cufon

Fast text replacement with canvas and VML - no Flash or images required.