CommunityToolkit.HighPerformance by: Microsoft.Toolkit

This package includes high performance .NET Standard helpers such as: - Memory2D<T> and Span2D<T>: two types providing fast and allocation-free abstraction over 2D memory areas. - ArrayPoolBufferWriter<T>: an IBufferWriter<T> implementation using pooled arrays, which also supports IMemoryOwner<T>. - MemoryBufferWriter<T>: an IBufferWriter<T>: implementation that can wrap external Memory<T>: instances. - MemoryOwner<T>: an IMemoryOwner<T> implementation with an embedded length and a fast Span<T> accessor. - SpanOwner<T>: a stack-only type with the ability to rent a buffer of a specified length and getting a Span<T> from it. - StringPool: a configurable pool for string instances that be used to minimize allocations when creating multiple strings from char buffers. - String, array, Memory<T>, Span<T> extensions and more, all focused on high performance. - HashCode<T>: a SIMD-enabled extension of HashCode to quickly process sequences of values. - BitHelper: a class with helper methods to perform bit operations on numeric types. - ParallelHelper: helpers to work with parallel code in a highly optimized manner. - Box<T>: a type mapping boxed value types and exposing some utility and high performance methods. - Ref<T>: a stack-only struct that can store a reference to a value of a specified type. - NullableRef<T>: a stack-only struct similar to Ref<T>, which also supports nullable references.

ConfigureAwait.Fody by: Cameron MacFarland, Simon Cropp

Configure async code's ConfigureAwait at a global level.

Confluent.Kafka by: Confluent Inc., Andreas Heider

Confluent's .NET Client for Apache Kafka

Confluent.SchemaRegistry by: Confluent Inc.

A .NET Client for Confluent Schema Registry

ConsoleControl by: Dave Kerr

The ConsoleControl is a WinForms control that you can drop into a Form to run an external process in a C# application.

CoreCompat.System.Drawing by: CoreCompat.System.Drawing

CoreCompat.System.Drawing

CoreProfiler by: teddy.ma

CoreProfiler - A .NET Core Profiling Library

CoreProfiler.Web by: teddy.ma

CoreProfiler.Web - A .NET Core Profiling Library

Costura.Fody by: geertvanhorrik, simoncropp

Fody add-in for embedding references as resources.

coverlet.collector by: tonerdo

Coverlet is a cross platform code coverage library for .NET, with support for line, branch and method coverage.

Crc32.NET by: force

Fast version of Crc32 & Crc32C algorithms for .NET and .NET Core. It is up to 3x-5x times better than other "fast" implemenations. Code based on Crc32C.NET library.

CronExpressionDescriptor by: Brady Holt

A library that converts cron expressions into human readable descriptions. Supports multiple languages including: English, Brazillian, Spanish, Norwgian, Turkish, Dutch, Chinese Simplified, Russian, French, German, Ukrainian, Persian (Farsi), Polish, Romanian, Italian, Swedish, Slovenian, Danish, Finnish, Greek, Kazakh and Japanese.

Cronos by: Andrey Dorokhov, Sergey Odinokov

A fully-featured .NET library for parsing cron expressions and calculating next occurrences that was designed with time zones in mind and correctly handles daylight saving time transitions.

CSharpFunctionalExtensions by: Vladimir Khorikov

CSharpFunctionalExtensions - functional extensions for C#.

CsvHelper by: Josh Close

A library for reading and writing CSV files. Extremely fast, flexible, and easy to use. Supports reading and writing of custom class objects.

Dapper by: Sam Saffron, Marc Gravell, Nick Craver

A high performance Micro-ORM supporting SQL Server, MySQL, Sqlite, SqlCE, Firebird etc..

Database by: Gil Sani

Create JSON based database on any device.

DBreeze by: Alex Solovyov / Ivars Sudmalis

DBreeze database key features: - Embedded .NET family assembly, platform independent and without references to other libraries. - Multi-threaded, ACID compliant, with a solution for deadlocks resolving/elimination, parallel reads and synchronized writes/reads. - No fixed scheme for table names (construction and access on the fly). - Tables can reside in mixed locations: different folders, hard drives, memory. - Liana-Trie indexing technology. Database indexes (keys) never need to be defragmented. Speed of insert/update/remove operations doesn't change during the time. - Ability to access Key/Value pair of a table by physical link, what can economize time for joining necessary data structures. - No limits for database size (except "long" size for each table and physical resources constraints). - Low memory and physical space consumption, also while random inserts and updates. Updates reside the same physical space, if possible. - High performance of CRUD operations. When you need, unleash DBreeze power and get 500000 key/value pairs insert or 260K updates per second per core into sorted table on the hard drive of standard PC. - High speed of random keys batch insert and updates (batch must be sorted in memory ascending and non-overwrite flag must be set). - Range selects / Traversing (Forward, Backward, From/To, Skip, StartsWith etc). Remove keys, change keys. - Keys and values, on the low level, are always byte arrays. - Max. key size is 65KB, max. value size is 2GB. Value can be represented as a set of columns, where can be stored data types of fixed or dynamic length. Every dynamic datablock can be of size 2GB. - Rich set of conversion functions from/to between byte[] and other data types. - Nested / Fractal tables which can reside inside of master tables values. - Incremental backup/restore option. - Integrated text-search subsystem (full-text/partial). - Integrated object database layer. - Fast multi-parameter search subsystem with powerful query possibilities. - DBreeze is a foundation for complex data storage solutions (graph/neuro, object, document, text search etc. data layers). Please, study documentation to understand all abilities of DBreeze. hhblaze@gmail.com

dbup by: Paul Stovell, Jim Burger, Jake Ginnivan, Damian Maclennan

This package exists to allow easy upgrades from pre-4.0 version This package was split into two packages dbup-core and dbup-sqlserver so that non SQL Server packages did not need to also reference the SQL Server code. Uninstall this package and install dbup-sqlserver, or the package for the server(s) you are targeting instead!

dbup-core by: Paul Stovell, Jim Burger, Jake Ginnivan, Damian Maclennan

DbUp makes it easy to deploy and upgrade SQL Server databases by running change scripts. This is the core library and should be used in conjunction with the database specific package (eg dbup-sqlserver, dbup-mysql)