A fast usermode x86 and x86-64 emulator for Arm64 Linux
⚡ Executive Summary & Quick Facts
Authoritative SourceFEX is FEX is an open-source project written in C++: A fast usermode x86 and x86-64 emulator for Arm64 Linux..
“According to real-time open source telemetry recorded on GitHubRepo.cloud (as of November 2026), FEX-Emu/FEX has accumulated 8,395 GitHub stars and 435 forks. It is written in C++, licensed under MIT, and ranks #1,884 globally. It is actively maintained with the latest commit recorded on Nov 9, 2026.”
| Repository | FEX-Emu/FEX ↗ |
|---|---|
| Primary Category | arm64 |
| Language & Stack | C++ |
| Software License | MIT |
| Community Traction | ★ 8.4K stars · ⑂ 435 forks · #1,884 globally |
| Maintenance | ● Active (Last commit: Nov 9, 2026) · 269 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: 92/100 · Grade AYes, FEX is actively maintained. Continuous telemetry recorded the last code commit on Nov 9, 2026 (0 days ago). Supported by 8,395 stars and 435 community forks, this repository holds a calculated health index of 92/100, reflecting very active (commits within last 14 days) and active community feedback (269 open).
Star History
Add Live Star History & Verified Badges to README.md
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.
Renders your high-resolution star trajectory chart right inside your GitHub README or project docs.
[](https://githubrepo.cloud/repo/FEX-Emu/FEX?utm_source=readme_chart)Compact badges for your README header. Real-time stars, velocity, health audit, and rank.
[](https://githubrepo.cloud/repo/FEX-Emu/FEX?utm_source=readme_badge) [](https://githubrepo.cloud/repo/FEX-Emu/FEX?utm_source=readme_badge) [](https://githubrepo.cloud/repo/FEX-Emu/FEX?utm_source=readme_badge) [](https://githubrepo.cloud/repo/FEX-Emu/FEX?utm_source=readme_badge) [](https://githubrepo.cloud/repo/FEX-Emu/FEX?utm_source=readme_badge)Momentum
+210
STARS · LAST 30 DAYS
7
PER DAY
#134
MOST-STARRED C++
| Window | 7 days | 30 days | 90 days |
|---|---|---|---|
| Stars gained | +49 | +210 | +630 |
| Per day | 7 | 7 | 7 |
| Forks gained | +2 | +9 | +22 |
FEX gained 210 stars in the last 30 days, about 7 a day, and now has 8.4K. It is about 7 years old and has averaged roughly 1.2K stars a year. It ranks #134 among C++ repositories and #1,884 across all languages on GitHubRepo.
Trending Record
1
DAYS ON TRENDING
#8795
BEST RANK
Nov 9, 2026
FIRST APPEARANCE
Active
STATUS TODAY
FEX has maintained a continuous presence across global trending indexes, peaking at #8795. Below is the 30-day activity profile:
💡 Overview
FEX is an open-source project written in C++: A fast usermode x86 and x86-64 emulator for Arm64 Linux.
Engineered for speed, consistency, and developer ease, it solves common hurdles in arm64, cpp, emulation. 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/FEX-Emu/FEX.git
cd FEX⚙ System Requirements
Platforms
- • macOS
- • Linux
- • Windows
Runtime & Dependencies
C++20 compliant compiler (GCC 11+, Clang 13+, MSVC)
Architecture
x86_64, ARM64 (Apple Silicon & Graviton)
🧠 How It Works
FEX 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 FEX 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 FEX using your package manager: `git clone https://github.com/FEX-Emu/FEX.git`
Initialize your project workspace or configuration file for FEX.
Import FEX into your codebase or invoke it directly from your terminal.
Execute your test suite or run `FEX --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
FEX-Emu/FEX is currently ranked #1,884 by stars across every repository tracked on GitHubRepo. These are adjacent projects:
| Rank | Repository | Language | Stars | Action |
|---|---|---|---|---|
| #1,879 | traefik/yaegi | Go | ★ 8.4K | Compare ↗ |
| #1,879 | storytold/vectorcraft | Rust | ★ 8.4K | Compare ↗ |
| #1,881 | symfony/finder | PHP | ★ 8.4K | Compare ↗ |
| #1,882 | DylanVann/react-native-fast-image | TypeScript | ★ 8.4K | Compare ↗ |
| #1,883 | readthedocs/readthedocs.org | Python | ★ 8.4K | Compare ↗ |
| #1,884 | FEX-Emu/FEX This Project | C++ | ★ 8.4K | |
| #1,885 | AnalogJ/scrutiny | Go | ★ 8.4K | Compare ↗ |
| #1,886 | isomorphic-git/isomorphic-git | JavaScript | ★ 8.4K | Compare ↗ |
| #1,887 | javalin/javalin | Kotlin | ★ 8.4K | Compare ↗ |
| #1,888 | django-commons/django-debug-toolbar | Python | ★ 8.4K | Compare ↗ |
| #1,889 | azahar-emu/azahar | C++ | ★ 8.4K | Compare ↗ |
Frequently Asked Questions
What does FEX do? +
A fast usermode x86 and x86-64 emulator for Arm64 Linux
Is FEX actively maintained in 2026? +
Yes, FEX is actively maintained. The latest code push was recorded on Nov 9, 2026 (0 days ago). It holds a calculated Maintenance Health Score of 92/100 (A rating) with 8,395 stars and 269 open issues.
What language is FEX written in? +
The primary language is C++. Topics include: arm64, cpp, emulation, emulator, linux.
How many stars does FEX have? +
FEX has 8,395 stars and 435 forks on GitHub.
How does FEX rank among GitHub repositories? +
With 8,395 stars, FEX-Emu/FEX is ranked #1,884 globally across all repositories tracked on GitHubRepo and #134 among C++ projects.
What license is FEX distributed under? +
The repository reports a MIT license. Always verify the repository LICENSE file for legal terms.
