EPPlus by: Jan Källman

A library to manage Excel spreadsheets, using OOXML.

Hl7.FhirPath by: Ewout Kramer (ewout@fire.ly) and contributors

This library contains a runtime environment for executing HL7 FhirPath queries and invariants. It is used by the HL7 .NET FHIR API to run validation for the HL7 FHIR object model.

FluentMigrator by: Josh Coffman Tom Marien

FluentMigrator is a database migration framework for .NET written in C#. The basic idea is that you can create migrations which are simply classes that derive from the Migration base class and have a Migration attribute with a unique version number attached to them. Upon executing FluentMigrator, you tell it which version to migrate to and it will run all necessary migrations in order to bring your database up to that version. In addition to forward migration support, FluentMigrator also supports different ways to execute the migrations along with selective migrations called profiles and executing arbitrary SQL.

Elmah.Io.Client by: elmah.io

.NET client for communicating with the elmah.io REST API

DotNetAnalyzers.PublicApiAnalyzer.Unstable by: Sam Harwell et. al.

An analyzer for packages with public APIs.

DotLiquid by: Tim Jones Alessandro Petrelli

DotLiquid is a templating system ported to the .NET framework from Ruby’s Liquid Markup.

Hl7.Fhir.ElementModel by: Ewout Kramer (ewout@fire.ly) and contributors

Interfaces and classes to work with FHIR data without using POCOs, in concert with the Hl7.Fhir.Serialization assembly.

FluentValidation by: Jeremy Skinner

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

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.

Glob by: Kevin Thompson <kevin@theautomaters.com>

A C# Glob library for .NET and .NET Core.

Fhir.Metrics by: Martijn Harthoorn

Conversion system for physical units, with UCUM implementation - The Unified Code for Units of Measure

ExcelNumberFormat by: ExcelNumberFormat developers

.NET library to parse ECMA-376 number format strings and format values like Excel and other spreadsheet softwares.

FastExpressionCompiler by: Maksim Volkau

FastExpressionCompiler is 10-40x times faster than Expression.Compile()

DotNetAnalyzers.PublicApiAnalyzer by: Sam Harwell et. al.

An analyzer for packages with public APIs.

Elmah.Io.AspNetCore by: elmah.io

An elmah.io provider for ASP.NET Core

Flurl.Http by: Todd Menier

A fluent, portable, testable HTTP client library.

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.

Flurl by: Todd Menier

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

Hl7.Fhir.R4 by: Ewout Kramer (ewout@fire.ly) and contributors

This is the core support library for HL7's FHIR standard (http://hl7.org/fhir). It contains the core functionality to working with RESTful FHIR servers: POCO classes for FHIR, parsing/serialization of FHIR data and a FhirClient for easy access to FHIR servers.

HL7-dotnetcore by: HL7-dotnetcore

Lightweight HL7 2.x library compatible with .Net Standard and .Net Core