The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.
⚡ Executive Summary & Quick Facts
Authoritative Sourceroslyn is roslyn is an open-source project written in C#: The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs..
“According to real-time open source telemetry recorded on GitHubRepo.cloud (as of November 2026), dotnet/roslyn has accumulated 20,768 GitHub stars and 4,372 forks. It is written in C#, licensed under MIT, and ranks #814 globally. It is actively maintained with the latest commit recorded on Nov 10, 2026.”
| Repository | dotnet/roslyn ↗ |
|---|---|
| Primary Category | csharp |
| Language & Stack | C# |
| Software License | MIT |
| Community Traction | ★ 20.8K stars · ⑂ 4.4K forks · #814 globally |
| Maintenance | ● Active (Last commit: Nov 10, 2026) · 6,736 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: 90/100 · Grade AYes, roslyn is actively maintained. Continuous telemetry recorded the last code commit on Nov 10, 2026 (3 days ago). Supported by 20,768 stars and 4,372 community forks, this repository holds a calculated health index of 90/100, reflecting very active (commits within last 14 days) and high open issue volume (6,736 open).
Star History
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+42
STARS · LAST 30 DAYS
1
PER DAY
#17
MOST-STARRED C#
| Window | 7 days | 30 days | 90 days |
|---|---|---|---|
| Stars gained | +9 | +42 | +90 |
| Per day | 1 | 1 | 1 |
| Forks gained | +9 | +27 | +219 |
roslyn gained 42 stars in the last 30 days, about 1 a day, and now has 20.8K. It is about 12 years old and has averaged roughly 1.7K stars a year. It ranks #17 among C# repositories and #814 across all languages on GitHubRepo.
Trending Record
45
DAYS ON TRENDING
#734
BEST RANK
Sep 25, 2026
FIRST APPEARANCE
Active
STATUS TODAY
roslyn has maintained a continuous presence across global trending indexes, peaking at #734. Below is the 30-day activity profile:
💡 Overview
roslyn is an open-source project written in C#: The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.
Engineered for speed, consistency, and developer ease, it solves common hurdles in csharp, hacktoberfest, roslyn. 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/dotnet/roslyn.git
cd roslyn⚙ System Requirements
Platforms
- • macOS
- • Linux
- • Windows
Runtime & Dependencies
C# environment and standard tooling
Architecture
x86_64, ARM64 (Apple Silicon & Graviton)
🧠 How It Works
roslyn 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 roslyn 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 roslyn using your package manager: `git clone https://github.com/dotnet/roslyn.git`
Initialize your project workspace or configuration file for roslyn.
Import roslyn into your codebase or invoke it directly from your terminal.
Execute your test suite or run `roslyn --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
dotnet/roslyn is currently ranked #814 by stars across every repository tracked on GitHubRepo. These are adjacent projects:
| Rank | Repository | Language | Stars | Action |
|---|---|---|---|---|
| #809 | apache/shardingsphere | Java | ★ 20.8K | Compare ↗ |
| #810 | avajs/ava | JavaScript | ★ 20.8K | Compare ↗ |
| #811 | gofr-dev/gofr | Go | ★ 20.8K | Compare ↗ |
| #812 | birobirobiro/awesome-shadcn-ui | TypeScript | ★ 20.8K | Compare ↗ |
| #813 | SWE-agent/SWE-agent | Python | ★ 20.8K | Compare ↗ |
| #814 | dotnet/roslyn This Project | C# | ★ 20.8K | |
| #814 | 1jehuang/jcode | Rust | ★ 20.8K | Compare ↗ |
| #816 | fullcalendar/fullcalendar | TypeScript | ★ 20.8K | Compare ↗ |
| #817 | google/filament | C++ | ★ 20.7K | Compare ↗ |
| #818 | jasontaylordev/CleanArchitecture | C# | ★ 20.7K | Compare ↗ |
| #819 | meta/astryx | TypeScript | ★ 20.6K | Compare ↗ |
Frequently Asked Questions
What does roslyn do? +
The Roslyn .NET compiler provides C# and Visual Basic languages with rich code analysis APIs.
Is roslyn actively maintained in 2026? +
Yes, roslyn is actively maintained. The latest code push was recorded on Nov 10, 2026 (3 days ago). It holds a calculated Maintenance Health Score of 90/100 (A rating) with 20,768 stars and 6,736 open issues.
What language is roslyn written in? +
The primary language is C#. Topics include: csharp, hacktoberfest, roslyn, visual-basic, visual-studio.
How many stars does roslyn have? +
roslyn has 20,768 stars and 4,372 forks on GitHub.
How does roslyn rank among GitHub repositories? +
With 20,768 stars, dotnet/roslyn is ranked #814 globally across all repositories tracked on GitHubRepo and #17 among C# projects.
What license is roslyn distributed under? +
The repository reports a MIT license. Always verify the repository LICENSE file for legal terms.
