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.Cloud by: FreeSql ncc YeXiangQin

提供跨数据库访问，分布式事务TCC、SAGA解决方案，支持 .NET Core 2.1+, .NET Framework 4.0+.

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.

FluentEmail.Smtp by: Luke Lowrey Ben Cull Github Contributors

Now we're talking. Send emails via SMTP. At the moment, only works on .NET 4.

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) for more information.

FluentEmail.Core by: Luke Lowrey Ben Cull Github Contributors

Send emails very easily. Use razor templates, smtp, embedded files, all without hassle. This is a Base Package and includes just the domain model, very basic defaults, and is also included with every other Fluent Email package here.

FreeIM by: YeXiangQin

.NET websocket 实现简易、高性能、集群即时通讯组件，支持点对点通讯、群聊通讯、上线下线事件消息等众多实用性功能.

FirebirdSql.Data.FirebirdClient by: FirebirdSQL

Firebird ADO.NET data provider

FreeSpire.PDF by: Administrator

As a standalone PDF component, Free Spire.PDF for .NET enables developers to create, write, edit, convert, print, handle and read PDF files on any .NET applications. You can implement rich capabilities to create PDF files from scratch or process existing PDF documents. Many rich features can be supported, such as security setting, PDF text/attachment/image extract, PDF merge/split, metadata update, section and paragraph optimizing, graph/image drawing and inserting, table creation and processing, and importing data etc. Main Functions Only Free Spire.PDF, No Adobe Acrobat installed. Free Spire.PDF for .NET is a totally independent .NET PDF library. It Does NOT require Adobe Acrobat or any other 3rd party software/library installed on system. High Quality PDF File Conversion • Convert Webpage HTML, HTML ASPX to PDF • Convert Image(Jpeg, Jpg, Png, Bmp, Tiff, Gif, EMF, Ico) to PDF • Convert Text to PDF • Convert RTF to PDF • Convert PDF to Image Easily Manipulate document and Form fields • Merge/split PDF documents • Overlay documents. • Import and stamp feature • Booklet feature • Create and fill form field Security features • Protect PDF documents by setting passwords and digital signature. • Decrypt PDF Document • Get and Verify Digital Signature • Modify PDF Passwords Document Settings features • Set custom metadata, document properties, page orientation, and page size. • Set PDF position, title display, resize, page mode and print scaling etc. Other Features • PDF/A-1b and PDF/x1a:2001 Compliance, both standards can be applied. • Extract images, text, pages and attachments from a PDF document • Pen and brush to draw shape elements, text, images into PDF documents. • Layers, transparent graphics, color space and barcode creation can render to PDF documents. • Add scalar/vector images and mask and place them in designated location. • Table and table style can be supported by Free Spire.PDF for .NET. • Insert interactive elements inc

FreeRedis by: FreeRedis

FreeRedis is .NET redis client, supports cluster, sentinel, master-slave, pipeline, transaction and connection pool.

FluentValidation by: Jeremy Skinner

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

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.

FluentValidation.AspNetCore by: Jeremy Skinner

AspNetCore integration for FluentValidation

Fody by: Fody

Extensible tool for weaving .net assemblies.

FreeScheduler by: YeXiangQin

轻量化定时任务调度，支持集群任务、临时的延时任务和重复循环任务，可按秒，每天/每周/每月固定时间，自定义间隔执行，支持 .NET Core 2.1+、.NET Framework 4.0+ 运行环境。

Fleck by: statenjason

C# WebSocket Implementation

FontStashSharp.Base by: FontStashSharpTeam

Package Description

Flurl.Http by: Todd Menier

A fluent, portable, testable HTTP client library.

Flurl by: Todd Menier

A fluent, portable URL builder. To make HTTP calls off the fluent chain, check out Flurl.Http.

FluentNHibernate by: James Gregory and contributors

Fluent, XML-less, compile safe, automated, convention-based mappings for NHibernate.