This project aims to create an easy to use, extendable and customizable server for a MMORPG called "MU Online".
⚡ Executive Summary & Quick Facts
Authoritative SourceOpenMU is OpenMU is an open-source project written in C#: This project aims to create an easy to use, extendable and customizable server for a MMORPG called "MU Online"..
“According to real-time open source telemetry recorded on GitHubRepo.cloud (as of November 2026), MUnique/OpenMU has accumulated 1,265 GitHub stars and 668 forks. It is written in C#, licensed under MIT, and ranks #7,469 globally. It is actively maintained with the latest commit recorded on Nov 2, 2026.”
| Repository | MUnique/OpenMU ↗ |
|---|---|
| Primary Category | games |
| Language & Stack | C# |
| Software License | MIT |
| Community Traction | ★ 1.3K stars · ⑂ 668 forks · #7,469 globally |
| Maintenance | ● Active (Last commit: Nov 2, 2026) · 65 open issues |
| Target Audience | Developers and engineering teams building with C#, seeking reliable, tested, and actively maintained tooling for production workloads. |
🛡️ Repository Maintenance & Health Audit (2026)
Health Score: 97/100 · Grade A+Yes, OpenMU is actively maintained. Continuous telemetry recorded the last code commit on Nov 2, 2026 (11 days ago). Supported by 1,265 stars and 668 community forks, this repository holds a calculated health index of 97/100, reflecting very active (commits within last 14 days) and healthy issue cadence.
Star History
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+60
STARS · LAST 30 DAYS
2
PER DAY
#379
MOST-STARRED C#
| Window | 7 days | 30 days | 90 days |
|---|---|---|---|
| Stars gained | +0 | +60 | +180 |
| Per day | 1 | 2 | 2 |
| Forks gained | +0 | +34 | +33 |
OpenMU gained 60 stars in the last 30 days, about 2 a day, and now has 1.3K. It is about 10 years old and has averaged roughly 127 stars a year. It ranks #379 among C# repositories and #7,469 across all languages on GitHubRepo.
Trending Record
40
DAYS ON TRENDING
#1164
BEST RANK
Sep 28, 2026
FIRST APPEARANCE
Active
STATUS TODAY
OpenMU has maintained a continuous presence across global trending indexes, peaking at #1164. Below is the 30-day activity profile:
💡 Overview
OpenMU is an open-source project written in C#: This project aims to create an easy to use, extendable and customizable server for a MMORPG called "MU Online".
Engineered for speed, consistency, and developer ease, it solves common hurdles in games, hacktoberfest, mmorpg. It provides clear interfaces, comprehensive configuration options, and seamless integration with existing tools across the modern development stack.
⚡ Key Features
Optimized execution pipeline written in C# for predictable speed.
Zero-friction configuration with comprehensive sensible defaults out of the box.
Cross-platform runtime support across Linux, macOS, and Windows environments.
Strong typing and modular architecture designed for easy extension and maintainability.
Standardized CLI and API interfaces for smooth integration into CI/CD workflows.
Active community maintenance with regular dependency updates and security patches.
📥 Installation
$ git clone https://github.com/MUnique/OpenMU.git
cd OpenMU⚙ System Requirements
Platforms
- • macOS
- • Linux
- • Windows
Runtime & Dependencies
C# environment and standard tooling
Architecture
x86_64, ARM64 (Apple Silicon & Graviton)
🧠 How It Works
OpenMU coordinates its core functionality through a modular C# pipeline. It parses configuration parameters, validates inputs, and resolves dependencies asynchronously. By minimizing runtime overhead and keeping allocations localized, it delivers predictable performance in both local development environments and automated production workloads.
🎯 Production Use Cases
Production System Integration
Embed OpenMU into C# backend services to handle core application logic.
CI/CD Automated Pipelines
Run automated validation, builds, and integration suites during deployments.
Developer Tooling & Workflows
Accelerate developer onboarding with pre-configured project utilities.
Open Source Extension
Fork and customize internal modules under the repository's open MIT license.
🚀 Getting Started
Install OpenMU using your package manager: `git clone https://github.com/MUnique/OpenMU.git`
Initialize your project workspace or configuration file for OpenMU.
Import OpenMU into your codebase or invoke it directly from your terminal.
Execute your test suite or run `OpenMU --help` to verify successful setup.
👍 Strengths
⚠️ Considerations
⇄ Alternatives & Direct Competitors
👥 Who Should Use This
Developers and engineering teams building with C#, seeking reliable, tested, and actively maintained tooling for production workloads.
🏆 Nearby in the Rankings
MUnique/OpenMU is currently ranked #7,469 by stars across every repository tracked on GitHubRepo. These are adjacent projects:
| Rank | Repository | Language | Stars | Action |
|---|---|---|---|---|
| #7,461 | AstraeLabs/VibraVid | Python | ★ 1.3K | Compare ↗ |
| #7,465 | yeoman/generator | TypeScript | ★ 1.3K | Compare ↗ |
| #7,465 | openspout/openspout | PHP | ★ 1.3K | Compare ↗ |
| #7,465 | ProwlEngine/Prowl | C# | ★ 1.3K | Compare ↗ |
| #7,465 | egoist/mygo-music | Go | ★ 1.3K | Compare ↗ |
| #7,469 | MUnique/OpenMU This Project | C# | ★ 1.3K | |
| #7,469 | Runfusion/Fusion | TypeScript | ★ 1.3K | Compare ↗ |
| #7,469 | timhartmann7/omnyssh | Rust | ★ 1.3K | Compare ↗ |
| #7,472 | etianen/html5media | JavaScript | ★ 1.3K | Compare ↗ |
| #7,472 | ngerakines/commitment | Python | ★ 1.3K | Compare ↗ |
| #7,472 | rauc/rauc | C | ★ 1.3K | Compare ↗ |
Frequently Asked Questions
What does OpenMU do? +
This project aims to create an easy to use, extendable and customizable server for a MMORPG called "MU Online".
Is OpenMU actively maintained in 2026? +
Yes, OpenMU is actively maintained. The latest code push was recorded on Nov 2, 2026 (11 days ago). It holds a calculated Maintenance Health Score of 97/100 (A+ rating) with 1,265 stars and 65 open issues.
What language is OpenMU written in? +
The primary language is C#. Topics include: games, hacktoberfest, mmorpg, mmorpg-server, mu.
How many stars does OpenMU have? +
OpenMU has 1,265 stars and 668 forks on GitHub.
How does OpenMU rank among GitHub repositories? +
With 1,265 stars, MUnique/OpenMU is ranked #7,469 globally across all repositories tracked on GitHubRepo and #379 among C# projects.
What license is OpenMU distributed under? +
The repository reports a MIT license. Always verify the repository LICENSE file for legal terms.
