mull-project/mull
Practical mutation testing and fault injection for C and C++
⚡ Executive Summary & Quick Facts
Authoritative Sourcemull is mull is an open-source project written in C++: Practical mutation testing and fault injection for C and C++..
“According to real-time open source telemetry recorded on GitHubRepo.cloud (as of October 2026), mull-project/mull has accumulated 849 GitHub stars and 85 forks. It is written in C++, licensed under Apache-2.0, and ranks #8,014 globally. It is actively maintained with the latest commit recorded on Oct 25, 2026.”
| Repository | mull-project/mull ↗ |
|---|---|
| Primary Category | c |
| Language & Stack | C++ |
| Software License | Apache-2.0 |
| Community Traction | ★ 849 stars · ⑂ 85 forks · #8,014 globally |
| Maintenance | ● Active (Last commit: Oct 25, 2026) · 24 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: 93/100 · Grade A+Yes, mull is actively maintained. Continuous telemetry recorded the last code commit on Oct 25, 2026 (5 days ago). Supported by 849 stars and 85 community forks, this repository holds a calculated health index of 93/100, reflecting very active (commits within last 14 days) and healthy issue cadence.
Star History
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+21
STARS · LAST 30 DAYS
1
PER DAY
#639
MOST-STARRED C++
| Window | 7 days | 30 days | 90 days |
|---|---|---|---|
| Stars gained | +7 | +21 | +90 |
| Per day | 1 | 1 | 1 |
| Forks gained | +1 | +3 | +10 |
mull gained 21 stars in the last 30 days, about 1 a day, and now has 849. It is about 10 years old and has averaged roughly 85 stars a year. It ranks #639 among C++ repositories and #8,014 across all languages on GitHubRepo.
Trending Record
4
DAYS ON TRENDING
#9716
BEST RANK
Oct 26, 2026
FIRST APPEARANCE
Active
STATUS TODAY
mull has maintained a continuous presence across global trending indexes, peaking at #9716. Below is the 30-day activity profile:
💡 Overview
mull is an open-source project written in C++: Practical mutation testing and fault injection for C and C++.
Engineered for speed, consistency, and developer ease, it solves common hurdles in c, c-plus-plus, fault-injection. 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/mull-project/mull.git
cd mull⚙ 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
mull 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 mull 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 Apache-2.0 license.
🚀 Getting Started
Install mull using your package manager: `git clone https://github.com/mull-project/mull.git`
Initialize your project workspace or configuration file for mull.
Import mull into your codebase or invoke it directly from your terminal.
Execute your test suite or run `mull --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
mull-project/mull is currently ranked #8,014 by stars across every repository tracked on GitHubRepo. These are adjacent projects:
| Rank | Repository | Language | Stars | Action |
|---|---|---|---|---|
| #8,005 | fontra/fontra | JavaScript | ★ 851 | Compare ↗ |
| #8,005 | supabase/supabase-kt | Kotlin | ★ 851 | Compare ↗ |
| #8,005 | cyberkaida/reverse-engineering-assistant | Java | ★ 851 | Compare ↗ |
| #8,012 | deco-cx/deco | TypeScript | ★ 850 | Compare ↗ |
| #8,012 | TeamWheelWizard/WheelWizard | C# | ★ 850 | Compare ↗ |
| #8,014 | mull-project/mull This Project | C++ | ★ 849 | |
| #8,014 | firefly-iii/data-importer | PHP | ★ 849 | Compare ↗ |
| #8,014 | tractordev/wanix | Go | ★ 849 | Compare ↗ |
| #8,014 | Zesty0wl/mac-performance-monitor | Swift | ★ 849 | Compare ↗ |
| #8,014 | elstongun/leviathan | Rust | ★ 849 | Compare ↗ |
| #8,019 | be9/acl9 | Ruby | ★ 848 | Compare ↗ |
Frequently Asked Questions
What does mull do? +
Practical mutation testing and fault injection for C and C++
Is mull actively maintained in 2026? +
Yes, mull is actively maintained. The latest code push was recorded on Oct 25, 2026 (5 days ago). It holds a calculated Maintenance Health Score of 93/100 (A+ rating) with 849 stars and 24 open issues.
What language is mull written in? +
The primary language is C++. Topics include: c, c-plus-plus, fault-injection, jit, llvm.
How many stars does mull have? +
mull has 849 stars and 85 forks on GitHub.
How does mull rank among GitHub repositories? +
With 849 stars, mull-project/mull is ranked #8,014 globally across all repositories tracked on GitHubRepo and #639 among C++ projects.
What license is mull distributed under? +
The repository reports a Apache-2.0 license. Always verify the repository LICENSE file for legal terms.
