This repo is the official home of .NET on GitHub. It's a great starting point to find many .NET OSS projects from Microsoft and the community, including many that are part of the .NET Foundation.

EF Core is a modern object-database mapper for .NET. It supports LINQ queries, change tracking, updates, and schema migrations.

Mono open source ECMA CLI, C# and .NET implementation.

A lightweight NuGet and symbol server

NCLDR is an open source .NET implementation of CLDR (the Common Locale Data Repository)

A C# library for reading and writing Named Binary Tag (NBT) files and streams. A continuation of libnbt project, originally by Erik Davidson (aphistic).

Oracle Cloud Infrastructure SDK for .NET

Library to help reading and writing CSV files