Top 20 NuGet fast Packages

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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://servicestack.net/text
Lightweight and implementation-free interfaces for DTO's, providers and adapters.
.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://servicestack.net/text
A fast, fun and stimulating object to object mapper. Kind of like AutoMapper, just simpler and way, way faster.
Lightweight and implementation-free interfaces for DTO's, providers and adapters.
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.
Suitest instrumentation library for Xbox One (UWP) apps. This package will make your UWP app testable with Suitest. Suitest is a multi-platform end-to-end test automation service with the focus on the productivity and ease of use. Sign up for free at https://suite.st to get started. To prepare you...
Deprecated. Use the strong named ServiceStack package instead.
.NET Standard 2.0 version of ServiceStack
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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...
Fast bulk insert extensions for Dapper.
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...
A fast way to read and write to Excel *.xlsx files without using the Open XML library.
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.
MongoCRUD is a high level library to make easy basic operations like create, update, update partial by query, upsert, delete, delete by query, get, search with paging and sorting, and filter buiders.
High-Performance image processing pipeline for .NET. Implements best-of-breed algorithms, linear light processing, and sharpening for the best image resizing quality available. Speed, efficiency, and image quality are unmatched by anything else on the .NET platform.
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.