Kargo automates promotion across dev, staging, and prod with approval gates and verification. Open source, built by the team behind Argo CD. Download now. Learn more →
Top 23 C# Plugin Projects
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MelonLoader
The World's First Universal Mod Loader for Unity Games compatible with both Il2Cpp and Mono
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Code Effects
Code Effects: AI-Ready .NET Business Rules Engine. Embed visual business rules in your .NET app with AI-assisted authoring, native VS debugging, blazing-fast compiled evaluation, and no SaaS dependency. FREE edition available.
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ReSharper
ReSharper is now available in VS Code and Cursor. ReSharper brings a professional toolset for C# developers backed by over 20 years of experience, enterprise-grade security, SOC 2 compliance, and the trust of companies worldwide.
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RuntimeUnityEditor
In-game inspector and debugging tools for applications made with Unity3D game engine
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Eflatun.SceneReference
Unity Scene References for Runtime and Editor. Strongly typed, robust, and reliable. Provides GUID, Path, Build Index, Name, and Address.
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streamdeck-tools
The Stream Deck Tools library wraps all the communication with the Stream Deck app, allowing you to focus on actually writing the Plugin's logic
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jellyfin-plugin-mergeversions
This plugin scans all your movies and groups every repeated movie in one version
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Kargo
Stop Scripting Promotions. Start Shipping with Kargo. Kargo automates promotion across dev, staging, and prod with approval gates and verification. Open source, built by the team behind Argo CD. Download now.
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
C# Plugin discussion
C# Plugin related posts
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CSV Lint update (Notepad++) text data syntax highlighting and quality validation
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Jellyfin.Plugin.PhoenixAdult VS Jellyfin.Plugin.Pronium - a user suggested alternative
2 projects | 2 Jan 2025 -
🚀 Invitation to Test and Review: AutoCAD Points Import Plugin 🚀
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CSV Lint plug-in for Notepad++ with highlighting, validation and datatypes
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A question for the pro's, am I misusing SQL?
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Looking for a CSV editor that doesn't modify the data like Excel does
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SQL/CSV data generator
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A note from our sponsor - Kargo
akuity.io | 11 Sep 2026
Index
What are some of the best open-source Plugin projects in C#? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | MelonLoader | 4,174 |
| 2 | Emby.Plugins.JavScraper | 3,784 |
| 3 | EverythingPowerToys | 3,363 |
| 4 | UnrealCLR | 3,308 |
| 5 | Klak | 2,001 |
| 6 | resharper-unity | 1,237 |
| 7 | UCR | 1,131 |
| 8 | RuntimeUnityEditor | 1,111 |
| 9 | KlakNDI | 916 |
| 10 | Eflatun.SceneReference | 839 |
| 11 | TS3AudioBot | 810 |
| 12 | KeeAnywhere | 751 |
| 13 | ASFEnhance | 741 |
| 14 | PKHeX-Plugins | 672 |
| 15 | PluginFramework | 598 |
| 16 | KeePass-Yet-Another-Favicon-Downloader | 568 |
| 17 | streamdeck-tools | 556 |
| 18 | KeePassOTP | 510 |
| 19 | vst.net | 451 |
| 20 | Jellyfin.Plugin.PhoenixAdult | 445 |
| 21 | jellyfin-plugin-mergeversions | 437 |
| 22 | BepInEx.ConfigurationManager | 407 |
| 23 | FirebasePushNotificationPlugin | 388 |
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Code Effects: AI-Ready .NET Business Rules Engine
Embed visual business rules in your .NET app with AI-assisted authoring, native VS debugging, blazing-fast compiled evaluation, and no SaaS dependency. FREE edition available.
codeeffects.com