OPRA is an open, community-maintained directory of product information and EQ compensation curves that optimize a wide range of headphone models.

A logger for MSBuild that records a structured representation of executed targets, tasks, property and item values.

Various tools and helpers to read assembly metadata.

Automated accessibility testing engine for Windows applications

ONNX Runtime: cross-platform, high performance ML inferencing and training accelerator

Coco/R for F#

Console program and nuget package to inject a module initializer method into a built .NET assembly

Composable subset of the VS-Editor platform that's UI-agnostic to allow cross-platform unit-testing scenarios

A free, open source, CMM engine. It provides fast transforms between ICC profiles.

A Roslyn-inspired full-fidelity XML parser with no dependencies and a simple Visual Studio XML language service

An IRC bot written in C# with several games built in

Source browser website generator that powers http://referencesource.microsoft.com and http://source.roslyn.io