Open-source alternatives to Java 8

Rocket.Chat client

Provides access to MAPI stores to facilitate investigation of Exchange and Outlook issues and to provide developers with a sample for MAPI development.

.NET is a free, cross-platform, open-source developer platform for building many different types of applications.

To build and run Azure Service Fabric applications on your Windows development machine, install the Service Fabric runtime, SDK, and tools.

Matrix Client

The package manager for .NET

The official PostgreSQL ODBC Driver

CLI for Windows app development, including package identity, packaging, managing appxmanifest.xml, test certificates, Windows (App) SDK projections, and more. For use with any app framework targeting Windows

A Windows desktop app that provides a user-friendly graphical user interface for Package Uploader and MakePkg. This app simplifies both package creation and upload operations.

Tools to help develop and test games that interact with Xbox services.

Microsoft MPI (MS-MPI) is a Microsoft implementation of the Message Passing Interface standard for developing and running parallel applications on the Windows platform.

Texassemble is a command-line tool from Microsoft's DirectXTex library, designed for assembling and processing texture arrays, cubemaps, volume maps, and other complex texture types.

This DirectXTex sample is an implementation of the texconv command-line texture utility from the legacy DirectX SDK utilizing DirectXTex rather than D3DX.

Texdiag is a diagnostic command-line tool from Microsoft's DirectXTex library, designed for analyzing and debugging texture files (e.g., DDS, PNG, TGA).

A command line tool for uninstalling versions of the .NET Core SDK, Runtime, ASP.NET Core Runtime, and Hosting Bundles.

.NET is a free, cross-platform, open-source developer platform for building many different types of applications.

Development tool for the Microsoft Bot Framework. Allows developers to test and debug bots on localhost.

.NET is a free, cross-platform, open-source developer platform for building many different types of applications.

IRC client

Free email and calendar

The Microsoft Build of OpenJDK is a new no-cost long-term supported distribution and Microsoft's new way to collaborate and contribute to the Java ecosystem.

Install, manage, and launch Python on Windows.

OnionShare is an open source tool that lets you securely and anonymously share files, host websites, and chat with friends using the Tor network

Liberica JDK is available on a variety of platforms. It is built from OpenJDK which BellSoft contributes to and is thoroughly tested.

Fast messaging synced across devices

Private messaging, end-to-end encrypted

Secure-by-default JavaScript and TypeScript runtime.

A nonlinear 2D puzzle platformer taking place in impossible spaces.

A desktop application built with Electron that monitors running games and displays achievements animated notifications

A crossplatform fast open-source alternative of VRChat Creator Companion