Fare by: Nikos Baxevanis

.NET port of dk.brics.automaton - Project Fare is an effort to bring a DFA/NFA (finite-state automata) implementation from Java to .NET. There are quite a few implementations available in other languages today. This project aims to fill the gap in .NET.

Fizzler by: Atif Aziz Colin Ramsay

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

FastReport.OpenSource by: Fast Reports Inc.

FastReport Open Source provides a free report generator for .NET/.NET Framework. You can use the FastReport Open Source in MVC, Web API, console applications. FastReport is written in C# and it is compatible with .NET Framework 4.6.2, .NET 6 and higher. Extendable FastReport architecture allows creating your own objects, export filters, wizards, and DB engines. - FastReport is a band-oriented report generator. There are 13 types of bands available: Report Title, Report Summary, Page Header, Page Footer, Column Header, Column Footer, Data Header, Data, Data Footer, Group Header, Group Footer, Child, and Overlay. In addition, sub-reports are fully supported. - A wide range of band types allows creating any kind of report: list, master-detail, group, multi-column, master-detail-detail and many more. - Wide range of available report objects: text, picture, line, shape, barcode, matrix, table, checkbox. - Reports can consist of several design pages, which allows reports to contain a cover, the data and a back cover, all in one file. - The Table object allows building a tabular report with variable number of rows and/or columns, just like in MS Excel. Aggregate functions are also available. - Powerful, fully configurable Matrix object that can be used to print pivot tables. - Report inheritance. For creating many reports with common elements such as titles, logos or footers you can place all the common elements in a base report and inherit all other reports from this base. Data Sources: - You can get data from XML, CSV, JSON, MS SQL, MySQL, Oracle, Postgres, MongoDB, Couchbase, Raven DB, SQLite. - FastReport has the ability to get data from business objects of IEnumerable type. - Report can contain data sources (tables, queries, DB connections). - Thus, you can not only use application-defined datasets but also connect to any database and use tables and queries directly within the report. FastReport Open Source can save documents in HTML, BMP, PNG, JPEG, GIF, TIFF, EMF. PDF export is available as a plugin.

FirebirdSql.Data.FirebirdClient by: FirebirdSQL

Firebird ADO.NET Data provider

FluentValidation by: Jeremy Skinner

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

Flurl by: Todd Menier

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

Flurl.Http by: Todd Menier

A fluent, portable, testable HTTP client library.

Fody by: Fody

Extensible tool for weaving .net assemblies.

Foundatio by: ejsmith bniemyjski

Pluggable foundation blocks for building distributed apps.

FastReport.Compat by: Fast Reports Inc.

Common compatible types for FastReport .Net, Core and Mono

FluentFTP by: J.P. Trosclair Harsh Gupta

An FTP and FTPS library for .NET, optimized for speed. Provides extensive FTP commands, file uploads/downloads, SSL/TLS connections and FTP proxies.

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.

FastMember by: Marc Gravell

In .NET reflection is slow... well, kinda slow. If you need access to the members of an arbitrary type, with the type and member-names known only at runtime - then it is frankly hard (especially for DLR types). This library makes such access easy and fast.

FastMember.Signed by: Marc Gravell

In .NET reflection is slow... well, kinda slow. If you need access to the members of an arbitrary type, with the type and member-names known only at runtime - then it is frankly hard (especially for DLR types). This library makes such access easy and fast.

FreeSpire.Doc by: Administrator

Free Spire.Doc for .NET is a professional and reliable word component for commercial and personal use. It enables developers to quickly and easily generate, read, write, save, print and convert documents on any .NET applications (ASP.NET, WinForms and Web Service, .NET Core) and it supports in C#, VB.NET. The featured function, conversion allows converting Word documents (Word 97-2003, Word 2007, Word 2010, Word 2013) to commonly used file format, format, such as XML, RTF, TXT, PDF, XPS, EPUB, HTML and Image etc. Free Spire.Doc for.NET is 100% FREE word component. Free Spire.Doc for .NET Features: *No Microsoft Word Automation *Speed and Easy-to-Use *Batch of Great Functions *High Performance *Totally Free Main functions High quality conversion Rich Word Document Features Process Pre-Existing Word Documents Other Technical Features

FodyHelpers by: FodyHelpers

Helpers for Fody.

ExtendedNumerics.BigDecimal by: https://github.com/AdamWhiteHat

Arbitrary precision decimal class

FluentValidation.ValidatorAttribute by: Jeremy Skinner

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

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

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.