1 starter issueunclaimed
- code
99% merged
replies in 3 hours
5 first-timers merged
An issue to start with#11228 Relicta needs a functioning atmospherics loop, pipes, vents, air alarms, light switches, and a lighting pass. (opens GitHub)
Most welcoming C# repos
30 repos, most welcoming first
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MUnique/
OpenMU This project aims to create an easy to use, extendable and customizable server for a MMORPG called "MU Online".
C# 1.2k stars
89% mergedreport →replies in about a day
16 first-timers merged
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dotnet/
efcore EF Core is a modern object-database mapper for .NET. It supports LINQ queries, change tracking, updates, and schema migrations.
C# 15k stars
93% mergedreport →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
- code
83% mergedreport →replies in 13 hours
15 first-timers merged
An issue to start with#3266 Affinitize benchmark process to performance cores by default (opens GitHub)
AngleSharp/
AngleSharp The ultimate angle brackets parser library parsing HTML5, MathML, SVG and CSS to construct a DOM based on the official W3C specifications.
C# · HTML 5.5k stars
86% mergedreport →replies in 6 hours
4 first-timers merged
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greenshot/
greenshot Greenshot for Windows - for more information look here:
C# · Inno Setup 5.1k stars
2 starter issuesall unclaimed
- code
82% mergedreport →replies in 2 hours
12 first-timers merged
An issue to start with#941 Greenshot gets blocked by Windows Security (opens GitHub)
- 93% mergedreport →
replies in 2 hours
11 first-timers merged
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ErikEJ/
EFCorePowerTools Entity Framework Core Power Tools - reverse engineering, migrations and model visualization in Visual Studio & CLI
C# 2.5k stars
1 starter issueunclaimed
- code
88% mergedreport →replies in 5 hours
5 first-timers merged
An issue to start with#3317 Missing type mapping for vector(n) columns in PostgreSQL (pgvector) (opens GitHub)
apache/
lucenenet Apache Lucene.NET is an open-source full-text search library written in C#, ported from the Apache Lucene project.
C# 2.4k stars
4 starter issuesall unclaimed
- code
- docs
- design
100% mergedreport →replies in about a day
15 first-timers merged
An issue to start with#1274 Resolve SonarCloud quality gate issues (opens GitHub)
testcontainers/
testcontainers-dotnet A library to support tests with throwaway instances of Docker containers for all compatible .NET Standard versions.
C# 4.4k stars
82% mergedreport →replies in 15 hours
22 first-timers merged
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stride3d/
stride Stride (formerly Xenko), a free and open-source cross-platform C# game engine.
C# 7.8k stars
76% mergedreport →replies in 2 days
13 first-timers merged
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dotnet/
maui .NET MAUI is the .NET Multi-platform App UI, a framework for building native device applications spanning mobile, tablet, and desktop.
C# 23k stars
77% mergedreport →replies in 2 hours
17 first-timers merged
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1 starter issueunclaimed
- code
84% mergedreport →replies in 3 hours
11 first-timers merged
An issue to start with#3878 [Feature] UseOutboxArchiver should not require DbTransaction generic type (opens GitHub)
OrchardCMS/
OrchardCore 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
77% mergedreport →replies in 14 hours
14 first-timers merged
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reactiveui/
ReactiveUI A composable, cross-platform MVVM framework for .NET inspired by functional reactive programming. It moves mutable state out of the user interface, keeps each feature's logic in one readable place, and makes applications easier to test. Supports WPF, WinForms, WinUI, .NET MAUI, Avalonia, Uno Platform, Blazor and Android.
C# 8.5k stars
100% mergedreport →replies in 3 hours
8 first-timers merged
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- 70% mergedreport →
replies in 13 hours
16 first-timers merged
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- 71% mergedreport →
replies in 5 hours
12 first-timers merged
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1 starter issueunclaimed
- code
77% mergedreport →replies in 7 days
10 first-timers merged
An issue to start with#2213 Add EditorConfig `.editorconfig` to project (opens GitHub)
LibreHardwareMonitor/
LibreHardwareMonitor Libre Hardware Monitor is free software that can monitor the temperature sensors, fan speeds, voltages, load and clock speeds of your computer.
C# 9.1k stars
1 starter issueunclaimed
- docs
69% mergedreport →replies in 15 hours
34 first-timers merged
An issue to start with#2407 Documentation Suggestion: Add note regarding HDD clicking/polling behavior (opens GitHub)
btcpayserver/
btcpayserver Accept Bitcoin payments. Free, open-source & self-hosted, Bitcoin payment processor.
C# · HTML 7.8k stars
1 starter issueunclaimed
- docs
- translations
67% mergedreport →replies in 23 hours
23 first-timers merged
An issue to start with#7389 Swahili Localization Proposal for BTCPay Server Documentation (opens GitHub)
MudBlazor/
MudBlazor 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
- code
- docs
68% mergedreport →replies in 12 hours
26 first-timers merged
An issue to start with#11991 MudOverlay: Allow setting custom opacity (opens GitHub)
1 starter issueunclaimed
- code
66% mergedreport →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
- code
- docs
69% mergedreport →replies in 15 hours
12 first-timers merged
An issue to start with#1662 [BUG]: Drawing out of doc bounds causes spikes (opens GitHub)
winsw/
winsw A wrapper executable that can run any executable as a Windows service, in a permissive license.
C# 14k stars
1 starter issueunclaimed
- code
82% mergedreport →replies in 4 days
4 first-timers merged
An issue to start with#1307 Binary for WindowsARM64 (opens GitHub)
5 starter issuesall unclaimed
- code
- docs
- tests
75% mergedreport →replies in 2 hours
6 first-timers merged
An issue to start with#1016 Document the current approach to object naming and object publicity in CLR metadata (opens GitHub)
gitextensions/
gitextensions Git Extensions is a standalone UI tool for managing git repositories. It also integrates with Windows Explorer and Microsoft Visual Studio (2015/2017/2019).
C# 8.6k stars
65% mergedreport →replies in 5 hours
20 first-timers merged
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abpframework/
abp 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
74% mergedreport →replies in 12 hours
11 first-timers merged
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1 starter issuetaken
- code
91% mergedreport →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
- 70% mergedreport →
replies in 20 hours
6 first-timers merged
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CommunityToolkit/
Maui The .NET MAUI Community Toolkit is a community-created library that contains .NET MAUI Extensions, Advanced UI/UX Controls, and Behaviors to help make your life as a .NET MAUI developer easier
C# 2.7k stars
1 starter issuetaken
- docs
65% mergedreport →replies in 9 hours
18 first-timers merged
An issue to start with#2898 [BUG] Anchor replacement/documentation missing in PopupV2 (opens GitHub)1 person already on it
