29 repos, most welcoming first
EF Core is a modern object-database mapper for .NET. It supports LINQ queries, change tracking, updates, and schema migrations.
C# 15k stars
replies in 12 days
19 first-timers merged
Outside contributors get real replies here, and their work gets merged. Replies are slow here: typically 11.6 days, beyond your 7-day budget.
1 starter issueunclaimed
replies in 13 hours
14 first-timers merged
An issue to start with#3266 Affinitize benchmark process to performance cores by default (opens GitHub)
Orchard Core is an open-source modular and multi-tenant application framework built with ASP.NET Core, and a content management system (CMS) built on top of that framework.
C# 8.2k stars
replies in 13 hours
16 first-timers merged
Outside contributors get real replies here, and their work gets merged.
Stride (formerly Xenko), a free and open-source cross-platform C# game engine.
C# 7.8k stars
replies in 2 days
13 first-timers merged
Outside contributors get real replies here, and their work gets merged.
.NET MAUI is the .NET Multi-platform App UI, a framework for building native device applications spanning mobile, tablet, and desktop.
C# 23k stars
replies in about an hour
14 first-timers merged
Outside contributors get real replies here, and their work gets merged.
Accept Bitcoin payments. Free, open-source & self-hosted, Bitcoin payment processor.
C# · HTML 7.8k stars
1 starter issueunclaimed
replies in 23 hours
23 first-timers merged
An issue to start with#7389 Swahili Localization Proposal for BTCPay Server Documentation (opens GitHub)
Blazor Component Library based on Material Design principles. Do more with Blazor, utilizing CSS and keeping JavaScript to a bare minimum.
C# · HTML 11k stars
5 starter issuesall unclaimed
replies in 12 hours
26 first-timers merged
An issue to start with#11991 MudOverlay: Allow setting custom opacity (opens GitHub)
1 starter issueunclaimed
replies in 2 days
20 first-timers merged
An issue to start with#9424 Wine via homebrew on MacOS is being removed on 2026-09-01 (opens GitHub)
1 starter issueunclaimed
replies in 15 hours
12 first-timers merged
An issue to start with#1662 [BUG]: Drawing out of doc bounds causes spikes (opens GitHub)
Open-source web application framework for ASP.NET Core! Offers an opinionated architecture to build enterprise software solutions with best practices on top of the .NET. Provides the fundamental infrastructure, cross-cutting-concern implementations, startup templates, application modules, UI themes, tooling and documentation.
C# 14k stars
replies in 12 hours
11 first-timers merged
Outside contributors get real replies here, and their work gets merged.
1 starter issuetaken
replies in 36 minutes
8 first-timers merged
An issue to start with#3270 QuerySelectorAllAsync Hangs Consistently (100% Reproducible) (opens GitHub)1 open pull request
Automatically switches between the dark and light theme of Windows 10 and Windows 11
C# 9.7k stars
5 starter issues4 unclaimed
replies in 14 hours
5 first-timers merged
An issue to start with#1235 Improvements to version number (opens GitHub)
Google's Material Design in XAML & WPF, for C# & VB.Net.
C# 16k stars
replies in 2 days
7 first-timers merged
Outside contributors get real replies here, and their work gets merged.
A modern file manager that helps users organize their files and folders.
C# 46k stars
1 starter issueunclaimed
replies in 7 hours
15 first-timers merged
An issue to start with#18580 Bug: Touch scrolling doesn't work in PDF Preview Pane on Surface devices (opens GitHub)
The high-speed OpenGL, OpenCL, OpenAL, OpenXR, GLFW, SDL, Vulkan, Assimp, WebGPU, and DirectX bindings library your mother warned you about.
C# 5.2k stars
replies in 2 days
6 first-timers merged
Outside contributors get real replies here, and their work gets merged.
1 starter issueunclaimed
replies in 10 days
5 first-timers merged
An issue to start with#8237 [Feature] F7.4: End-to-end examples and user validation (opens GitHub)
A fork of Space Station 14, embracing a mixture of classic SS13 chaos and experimentation only possible with the new engine
C# 143 stars
5 starter issuesall unclaimed
replies in about a day
23 first-timers merged
An issue to start with#6520 Macrocosm subfolder typos (opens GitHub)
1 starter issuetaken
replies in 2 days
13 first-timers merged
An issue to start with#9603 Add FXMacroData macro custom data example (opens GitHub)1 person already on it
replies in 13 hours
13 first-timers merged
Outside contributors get real replies here, and their work gets merged.
Python for .NET is a package that gives Python programmers nearly seamless integration with the .NET Common Language Runtime (CLR) and provides a powerful application scripting tool for .NET developers.
C# · Python 5.5k stars
replies in 2 days
2 first-timers merged
Outside contributors get real replies here, and their work gets merged.
replies in 6 days
2 first-timers merged
Outside contributors get real replies here, and their work gets merged.
replies in 13 hours
2 first-timers merged
Outside contributors get real replies here, and their work gets merged.
The Microsoft Build Engine (MSBuild) is the build platform for .NET and Visual Studio.
C# 5.6k stars
replies in 5 days
4 first-timers merged
Outside contributors get real replies here, and their work gets merged.
2 starter issuesall taken
replies in 2 hours
12 first-timers merged
An issue to start with#17666 Splashscreen - Unsupported image locks branding page (opens GitHub)1 open pull request
.NET for Apache® Spark™ makes Apache Spark™ easily accessible to .NET developers.
C# · Scala 2.1k stars
replies in 4 weeks
2 first-timers merged
Outside contributors get real replies here, and their work gets merged. Replies are slow here: typically 27.3 days, beyond your 7-day budget.
replies in 23 hours
10 first-timers merged
Outside contributors get real replies here, and their work gets merged.
This repository contains a suite of libraries that provide facilities commonly needed when creating production-ready applications.
C# 3.2k stars
replies in 10 hours
9 first-timers merged
Outside contributors get real replies here, and their work gets merged.
Mission Planner Ground Control Station for ArduPilot (c# .net)
C# · JavaScript 2.4k stars
replies in about a day
9 first-timers merged
Outside contributors get real replies here, and their work gets merged.
Command line parsing, invocation, and rendering of terminal output.
C# · Shell 3.7k stars
1 starter issuetaken
replies in 18 hours
5 first-timers merged
An issue to start with#2822 Incomplete French (fr) translation: RequiredOptionWasNotProvided not translated (opens GitHub)1 open pull request
EF Core is a modern object-database mapper for .NET. It supports LINQ queries, change tracking, updates, and schema migrations.
C# 15k stars
replies in 12 days
19 first-timers merged
Outside contributors get real replies here, and their work gets merged. Replies are slow here: typically 11.6 days, beyond your 7-day budget.
1 starter issueunclaimed
replies in 13 hours
14 first-timers merged
An issue to start with#3266 Affinitize benchmark process to performance cores by default (opens GitHub)
Orchard Core is an open-source modular and multi-tenant application framework built with ASP.NET Core, and a content management system (CMS) built on top of that framework.
C# 8.2k stars
replies in 13 hours
16 first-timers merged
Outside contributors get real replies here, and their work gets merged.
Stride (formerly Xenko), a free and open-source cross-platform C# game engine.
C# 7.8k stars
replies in 2 days
13 first-timers merged
Outside contributors get real replies here, and their work gets merged.
.NET MAUI is the .NET Multi-platform App UI, a framework for building native device applications spanning mobile, tablet, and desktop.
C# 23k stars
replies in about an hour
14 first-timers merged
Outside contributors get real replies here, and their work gets merged.
Accept Bitcoin payments. Free, open-source & self-hosted, Bitcoin payment processor.
C# · HTML 7.8k stars
1 starter issueunclaimed
replies in 23 hours
23 first-timers merged
An issue to start with#7389 Swahili Localization Proposal for BTCPay Server Documentation (opens GitHub)
Blazor Component Library based on Material Design principles. Do more with Blazor, utilizing CSS and keeping JavaScript to a bare minimum.
C# · HTML 11k stars
5 starter issuesall unclaimed
replies in 12 hours
26 first-timers merged
An issue to start with#11991 MudOverlay: Allow setting custom opacity (opens GitHub)
1 starter issueunclaimed
replies in 2 days
20 first-timers merged
An issue to start with#9424 Wine via homebrew on MacOS is being removed on 2026-09-01 (opens GitHub)
1 starter issueunclaimed
replies in 15 hours
12 first-timers merged
An issue to start with#1662 [BUG]: Drawing out of doc bounds causes spikes (opens GitHub)
Open-source web application framework for ASP.NET Core! Offers an opinionated architecture to build enterprise software solutions with best practices on top of the .NET. Provides the fundamental infrastructure, cross-cutting-concern implementations, startup templates, application modules, UI themes, tooling and documentation.
C# 14k stars
replies in 12 hours
11 first-timers merged
Outside contributors get real replies here, and their work gets merged.
1 starter issuetaken
replies in 36 minutes
8 first-timers merged
An issue to start with#3270 QuerySelectorAllAsync Hangs Consistently (100% Reproducible) (opens GitHub)1 open pull request
Automatically switches between the dark and light theme of Windows 10 and Windows 11
C# 9.7k stars
5 starter issues4 unclaimed
replies in 14 hours
5 first-timers merged
An issue to start with#1235 Improvements to version number (opens GitHub)
Google's Material Design in XAML & WPF, for C# & VB.Net.
C# 16k stars
replies in 2 days
7 first-timers merged
Outside contributors get real replies here, and their work gets merged.
A modern file manager that helps users organize their files and folders.
C# 46k stars
1 starter issueunclaimed
replies in 7 hours
15 first-timers merged
An issue to start with#18580 Bug: Touch scrolling doesn't work in PDF Preview Pane on Surface devices (opens GitHub)
The high-speed OpenGL, OpenCL, OpenAL, OpenXR, GLFW, SDL, Vulkan, Assimp, WebGPU, and DirectX bindings library your mother warned you about.
C# 5.2k stars
replies in 2 days
6 first-timers merged
Outside contributors get real replies here, and their work gets merged.
1 starter issueunclaimed
replies in 10 days
5 first-timers merged
An issue to start with#8237 [Feature] F7.4: End-to-end examples and user validation (opens GitHub)
A fork of Space Station 14, embracing a mixture of classic SS13 chaos and experimentation only possible with the new engine
C# 143 stars
5 starter issuesall unclaimed
replies in about a day
23 first-timers merged
An issue to start with#6520 Macrocosm subfolder typos (opens GitHub)
1 starter issuetaken
replies in 2 days
13 first-timers merged
An issue to start with#9603 Add FXMacroData macro custom data example (opens GitHub)1 person already on it
replies in 13 hours
13 first-timers merged
Outside contributors get real replies here, and their work gets merged.
Python for .NET is a package that gives Python programmers nearly seamless integration with the .NET Common Language Runtime (CLR) and provides a powerful application scripting tool for .NET developers.
C# · Python 5.5k stars
replies in 2 days
2 first-timers merged
Outside contributors get real replies here, and their work gets merged.
replies in 6 days
2 first-timers merged
Outside contributors get real replies here, and their work gets merged.
replies in 13 hours
2 first-timers merged
Outside contributors get real replies here, and their work gets merged.
The Microsoft Build Engine (MSBuild) is the build platform for .NET and Visual Studio.
C# 5.6k stars
replies in 5 days
4 first-timers merged
Outside contributors get real replies here, and their work gets merged.
2 starter issuesall taken
replies in 2 hours
12 first-timers merged
An issue to start with#17666 Splashscreen - Unsupported image locks branding page (opens GitHub)1 open pull request
.NET for Apache® Spark™ makes Apache Spark™ easily accessible to .NET developers.
C# · Scala 2.1k stars
replies in 4 weeks
2 first-timers merged
Outside contributors get real replies here, and their work gets merged. Replies are slow here: typically 27.3 days, beyond your 7-day budget.
replies in 23 hours
10 first-timers merged
Outside contributors get real replies here, and their work gets merged.
This repository contains a suite of libraries that provide facilities commonly needed when creating production-ready applications.
C# 3.2k stars
replies in 10 hours
9 first-timers merged
Outside contributors get real replies here, and their work gets merged.
Mission Planner Ground Control Station for ArduPilot (c# .net)
C# · JavaScript 2.4k stars
replies in about a day
9 first-timers merged
Outside contributors get real replies here, and their work gets merged.
Command line parsing, invocation, and rendering of terminal output.
C# · Shell 3.7k stars
1 starter issuetaken
replies in 18 hours
5 first-timers merged
An issue to start with#2822 Incomplete French (fr) translation: RequiredOptionWasNotProvided not translated (opens GitHub)1 open pull request
