Top 20 NuGet points Packages

Stock Indicators for .NET. Send in price quotes and get back desired technical analysis indicators such as MACD, Stochastic RSI, Average True Range, Parabolic SAR, etc. Nothing more.
Genral math helpers. For example: Numerics helpers. (NOTE: Interpolation with Bezier was moved to Rulyotano.Math.Interpolation.Bezier package)
Curiously, Bing does not provide a framework for accessing their REST APIs in .NET. This library attempts to solve that problem, with a PCL that works on .NET 4.5, Windows 8.x, Windows Phone 8, and Mono.
The Api for Qixol Promo provides the classes needed to access the functionality of the cloud-based promotion engine in your project.