ExtendedNumerics.BigDecimal by: Adam White Jan Christoph Bernack Rick Harker

An arbitrary precision decimal (base 10) floating point number type using a mantissa and exponent. Supports nth roots, trigonometric functions, logarithms, natural e, pi, etc.

FirebirdSql.Data.FirebirdClient by: FirebirdSQL

Firebird ADO.NET data provider

Fizzler by: Atif Aziz Colin Ramsay

Fizzler is a W3C Selectors parser and generic selector framework for document hierarchies.

FluentAssertions by: Dennis Doomen Jonas Nyrup Xceed

A very extensive set of extension methods that allow you to more naturally specify the expected outcome of a TDD or BDD-style unit tests. Works with .NET Standard 2.0 and higher, .NET Framework 4.7 and higher and .NET 6 and higher. Supports the unit test frameworks MSTest2, NUnit3, NUnit4, XUnit2, XUnit3, MSpec and TUnit. IMPORTANT: This version is free for open-source projects and non-commercial use, but commercial use requires [a paid license](https://xceed.com/products/unit-testing/fluent-assertions/). Check out the [license page](LICENSE.md) for more information.

FluentFTP by: Robin Rodricks FluentFTP Contributors

An FTP and FTPS client for .NET & .NET Standard, optimized for speed. Provides extensive FTP commands, File uploads/downloads, SSL/TLS connections, Directory listing parsing, File hashing/checksums, File permissions/CHMOD, FTP proxies, FXP transfers, UTF-8 support, Async/await support, Powershell support and more. Written entirely in C#, with no external dependencies.

FluentFTP.GnuTLS by: Michael Stiemke Robin Rodricks FluentFTP Contributors

Adds support for TLS1.3 streams into FluentFTP using a .NET wrapper of GnuTLS.

FluentValidation by: Jeremy Skinner

A validation library for .NET that uses a fluent interface to construct strongly-typed validation rules.

FluentValidation.AspNetCore by: Jeremy Skinner

AspNetCore integration for FluentValidation

Fractions by: Daniel Mueller

The fraction data type consists of two BigInteger values for numerator and denominator. It implements various operations (addition, subtraction, multiplication, division and remainder) with operator overloads.

FreeSql by: FreeSql ncc YeXiangQin

FreeSql is the ORM in .NetCore, .NetFramework, And Xamarin. It supports Mysql, Postgresql, SqlServer, Oracle, Sqlite, Firebird, Clickhouse, DuckDB, TDengine, QuestDB, Odbc, Oledb, 达梦, 人大金仓, 南大通用, 虚谷, 神舟通用, 翰高, And Access

FreeSql.DbContext by: FreeSql ncc YeXiangQin

FreeSql is the ORM in .NetCore, .NetFramework, And Xamarin. It supports Mysql, Postgresql, SqlServer, Oracle, Sqlite, Firebird, Clickhouse, DuckDB, TDengine, QuestDB, Odbc, Oledb, 达梦, 人大金仓, 南大通用, 虚谷, 神舟通用, 翰高, And Access

FreeSql.Provider.MySql by: FreeSql ncc YeXiangQin

FreeSql 数据库实现，基于 MySql 5.6，Ado.Net 驱动是 MySql.Data（Oracle官方）

FreeSql.Provider.MySqlConnector by: FreeSql ncc YeXiangQin

FreeSql 数据库实现，基于 MySql 5.6，Ado.Net 驱动是 MySqlConnector

FreeSql.Provider.Oracle by: FreeSql ncc YeXiangQin

FreeSql 数据库实现，基于 Oracle 11

FreeSql.Provider.PostgreSQL by: FreeSql ncc YeXiangQin

FreeSql 数据库实现，基于 PostgreSQL 9.5

FreeSql.Provider.Sqlite by: FreeSql ncc YeXiangQin

FreeSql 数据库实现，基于 Sqlite 3.0，支持 .NetCore、.NetFramework、Xamarin

FreeSql.Provider.SqlServer by: FreeSql ncc YeXiangQin

FreeSql 数据库实现，基于 SqlServer 2005+，并根据版本适配分页方法：row_number 或 offset fetch next

FreeSql.Repository by: FreeSql ncc YeXiangQin

FreeSql Implementation of General Repository, Support MySql/SqlServer/PostgreSQL/Oracle/Sqlite/Firebird/Clickhouse/DuckDB/TDengine/QuestDB/达梦/人大金仓/南大通用/虚谷/神舟通用/翰高/Access, and read/write separation、and split table.

Gee.External.Capstone by: Ahmed Garhy (@9ee1)

Capstone.NET is an opinionated .NET Core and a .NET Framework binding for the Capstone disassembly framework. It is written in C#, supports Capstone 4, and has a friendly and simple type safe API that is ridiculously easy to learn and quick to pick up.

GeoAPI by: NetTopologySuite Team

GeoAPI.NET project provides a common framework based on OGC/ISO standards to improve interoperability among .NET GIS projects.