icsharpcode/ILSpy
.NET Decompiler with support for PDB generation, ReadyToRun, Metadata (&more) - cross-platform!
⚡ Executive Summary & Quick Facts
Authoritative SourceILSpy is ILSpy is an open-source project written in C#: .NET Decompiler with support for PDB generation, ReadyToRun, Metadata (&more) - cross-platform!..
“According to real-time open source telemetry recorded on GitHubRepo.cloud (as of November 2026), icsharpcode/ILSpy has accumulated 27,023 GitHub stars and 3,826 forks. It is written in C#, licensed under MIT, and ranks #629 globally. It is actively maintained with the latest commit recorded on Nov 9, 2026.”
| Repository | icsharpcode/ILSpy ↗ |
|---|---|
| Primary Category | c sharp |
| Language & Stack | C# |
| Software License | MIT |
| Community Traction | ★ 27K stars · ⑂ 3.8K forks · #629 globally |
| Maintenance | ● Active (Last commit: Nov 9, 2026) · 176 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: 100/100 · Grade A+Yes, ILSpy is actively maintained. Continuous telemetry recorded the last code commit on Nov 9, 2026 (4 days ago). Supported by 27,023 stars and 3,826 community forks, this repository holds a calculated health index of 100/100, reflecting very active (commits within last 14 days) and healthy issue cadence.
Star History
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Keep your repository README looking professional and dynamic. As our continuous crawler records new stars, these official SVG badges update in real time with zero maintenance.
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[](https://githubrepo.cloud/repo/icsharpcode/ILSpy?utm_source=readme_chart)Compact badges for your README header. Real-time stars, velocity, health audit, and rank.
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+525
STARS · LAST 30 DAYS
18
PER DAY
#12
MOST-STARRED C#
| Window | 7 days | 30 days | 90 days |
|---|---|---|---|
| Stars gained | +189 | +525 | +1.6K |
| Per day | 27 | 18 | 18 |
| Forks gained | +38 | +81 | +191 |
ILSpy gained 525 stars in the last 30 days, about 18 a day, and now has 27K. It is about 16 years old and has averaged roughly 1.7K stars a year. It ranks #12 among C# repositories and #629 across all languages on GitHubRepo.
Trending Record
41
DAYS ON TRENDING
#144
BEST RANK
Sep 27, 2026
FIRST APPEARANCE
Active
STATUS TODAY
ILSpy has maintained a continuous presence across global trending indexes, peaking at #144. Below is the 30-day activity profile:
💡 Overview
ILSpy is an open-source project written in C#: .NET Decompiler with support for PDB generation, ReadyToRun, Metadata (&more) - cross-platform!.
Engineered for speed, consistency, and developer ease, it solves common hurdles in c-sharp, decompile, decompiler. 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/icsharpcode/ILSpy.git
cd ILSpy⚙ System Requirements
Platforms
- • macOS
- • Linux
- • Windows
Runtime & Dependencies
C# environment and standard tooling
Architecture
x86_64, ARM64 (Apple Silicon & Graviton)
🧠 How It Works
ILSpy 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 ILSpy 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 ILSpy using your package manager: `git clone https://github.com/icsharpcode/ILSpy.git`
Initialize your project workspace or configuration file for ILSpy.
Import ILSpy into your codebase or invoke it directly from your terminal.
Execute your test suite or run `ILSpy --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
icsharpcode/ILSpy is currently ranked #629 by stars across every repository tracked on GitHubRepo. These are adjacent projects:
| Rank | Repository | Language | Stars | Action |
|---|---|---|---|---|
| #624 | OpenZeppelin/openzeppelin-contracts | Solidity | ★ 27.3K | Compare ↗ |
| #625 | yikart/AiToEarn | TypeScript | ★ 27.3K | Compare ↗ |
| #626 | hashicorp/vagrant | Ruby | ★ 27.2K | Compare ↗ |
| #627 | typesense/typesense | C++ | ★ 27.1K | Compare ↗ |
| #628 | philc/vimium | JavaScript | ★ 27.1K | Compare ↗ |
| #629 | icsharpcode/ILSpy This Project | C# | ★ 27K | |
| #629 | mihomo-party-org/clash-party | TypeScript | ★ 27K | Compare ↗ |
| #631 | angular/angular-cli | TypeScript | ★ 27K | Compare ↗ |
| #632 | henrygd/beszel | Go | ★ 27K | Compare ↗ |
| #633 | deepset-ai/haystack | Python | ★ 27K | Compare ↗ |
| #634 | yetone/magpie | Go | ★ 26.9K | Compare ↗ |
Frequently Asked Questions
What does ILSpy do? +
.NET Decompiler with support for PDB generation, ReadyToRun, Metadata (&more) - cross-platform!
Is ILSpy actively maintained in 2026? +
Yes, ILSpy is actively maintained. The latest code push was recorded on Nov 9, 2026 (4 days ago). It holds a calculated Maintenance Health Score of 100/100 (A+ rating) with 27,023 stars and 176 open issues.
What language is ILSpy written in? +
The primary language is C#. Topics include: c-sharp, decompile, decompiler, decompiler-engine, dotnet.
How many stars does ILSpy have? +
ILSpy has 27,023 stars and 3,826 forks on GitHub.
How does ILSpy rank among GitHub repositories? +
With 27,023 stars, icsharpcode/ILSpy is ranked #629 globally across all repositories tracked on GitHubRepo and #12 among C# projects.
What license is ILSpy distributed under? +
The repository reports a MIT license. Always verify the repository LICENSE file for legal terms.
