Top 20 NuGet fast Packages

A fast, fun and stimulating object to object mapper. Kind of like AutoMapper, just simpler and way, way faster.
ServiceStack is a simple and fast alternative to WCF, MVC and Web API in one cohesive framework for all your services and web apps that's intuitive and Easy to use! To get started see: https://servicestack.net/getting-started
.NET's fastest JSON, JSV and CSV Text Serializers. Fast, Light, Resilient. Contains ServiceStack's high-performance text-processing powers, for more info see: https://github.com/ServiceStack/ServiceStack.Text
.NET's fastest JSON, JSV and CSV Text Serializers. Fast, Light, Resilient. Contains ServiceStack's high-performance text-processing powers, for more info see: https://github.com/ServiceStack/ServiceStack.Text
ServiceStack is a simple and fast alternative to WCF, MVC and Web API in one cohesive framework for all your services and web apps that's intuitive and Easy to use! To get started see: https://servicestack.net/getting-started
Extensions to VelocityDB for efficient LINQ index/BTree queries, AzureSession file API usage with Microsoft Azure, import/export to/from CSV and JSON, Sync, GeoHash, Compressed Bitmap and RTree.
Trading and algorithmic trading platform (stock markets, forex, bitcoins and options). .NET API for InteractiveBrokers, GainCapital, OANDA, FIX/FAST, Binance etc. More info on web site https://stocksharp.com/products/api/
Trimmed down {{mustache}} templates in .NET
LZ4 is lossless compression algorithm, sacrificing compression ratio for compression/decompression speed. Its compression speed is ~400 MB/s per core while decompression speed reaches ~2 GB/s, not far from RAM speed limits. LZ4net brings LZ4 to all (most?) .NET platforms: .NET 2.0+, .NET Core, Mono...
Snappy is an extremely fast compressor (250MB/s) and decompressor (500MB/s). Snappy.NET is a P/Invoke wrapper around native Snappy, which additionally implements Snappy framing/streaming format.
Small Library for fast deep or shallow cloning .NET objects. It allows to copy everything and has a lot of performance tricks for fast copying.
High performance and availability, scalable and very flexible pure .NET database. Using VelocityDB saves time and money for all software requiring reliable, high performance data persistence. Any .NET object can be efficiently persisted and retrieved within ACID transactional scope. The use of Veloc...
Add the ProtoBuf binary format and endpoint to a ServiceStack web service host.
Rabbit MQ client and server adapters for the ServiceStack web services framework. This library enables consuming and publishing to ServiceStack services when hosted within a Rabbit MQ Server Host.
Add the Wire binary format and endpoint to a ServiceStack web service host.
Add the MsgPack binary format and endpoint to a ServiceStack web service host.
Rabbit MQ client and server adapters for the ServiceStack web services framework. This library enables consuming and publishing to ServiceStack services when hosted within a Rabbit MQ Server Host.
Add the ProtoBuf binary format and endpoint to a ServiceStack web service host.
Add the MsgPack binary format and endpoint to a ServiceStack web service host.
ImageUltimate is the fastest and easiest ASP.NET image resizer which supports ASP.NET Core 2.0+, ASP.NET MVC 3+ and ASP.NET WebForms 4+ web applications/web sites. ImageUltimate can also be used with .NET Core 2.0+ and .NET Framework 4.0+ console/desktop applications for conversion between several i...