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facebook/hhvm

A virtual machine for executing programs written in Hack.

C++ ◇ hack NOASSERTION
★18.7KSTARS
⑂3.1KFORKS
!550ISSUES
🏆#607GLOBAL RANK
🔥79DAYS TRENDING
🚀
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Momentum

+467

STARS · LAST 30 DAYS

16

PER DAY

#32

MOST-STARRED C++

Window7 days30 days90 days
Stars gained+0+467+1.4K
Per day11616
Forks gained+0+61+153

hhvm gained 467 stars in the last 30 days, about 16 a day, and now has 18.7K. It is about 17 years old and has averaged roughly 1.1K stars a year. It ranks #32 among C++ repositories and #607 across all languages on GitHubRepo.

Trending Record

hhvm has maintained a continuous presence across global trending indexes, peaking at #100. Below is the 30-day activity profile:

💡 Overview

hhvm is an open-source project written in C++: A virtual machine for executing programs written in Hack.

Engineered for speed, consistency, and developer ease, it solves common hurdles in hack, hacklang, hhvm. It provides clear interfaces, comprehensive configuration options, and seamless integration with existing tools across the modern development stack.

⚡ Key Features

1

Optimized execution pipeline written in C++ for predictable speed.

2

Zero-friction configuration with comprehensive sensible defaults out of the box.

3

Cross-platform runtime support across Linux, macOS, and Windows environments.

4

Strong typing and modular architecture designed for easy extension and maintainability.

5

Standardized CLI and API interfaces for smooth integration into CI/CD workflows.

6

Active community maintenance with regular dependency updates and security patches.

📥 Installation

terminal
$ git clone https://github.com/facebook/hhvm.git
cd hhvm

⚙ 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

hhvm 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 hhvm 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 NOASSERTION license.

🚀 Getting Started

1

Install hhvm using your package manager: `git clone https://github.com/facebook/hhvm.git`

2

Initialize your project workspace or configuration file for hhvm.

3

Import hhvm into your codebase or invoke it directly from your terminal.

4

Execute your test suite or run `hhvm --help` to verify successful setup.

👍 Strengths

Active community backing with 18,663 GitHub stars and verified adoption.
Permissive open-source distribution under the NOASSERTION license.
Built in C++ for high execution speed and developer familiarity.
Cross-platform compatibility across modern Linux, macOS, and Windows environments.
Clean modular design allowing flexible configuration and pipeline integration.

⚠️ Considerations

Requires familiarity with C++ and modern CLI workflows.
Ecosystem extensions may require manual configuration depending on environment constraints.
Active development roadmap means breaking API changes may occur across major versions.

⇄ Alternatives & Direct Competitors

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👥 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

facebook/hhvm is currently ranked #607 by stars across every repository tracked on GitHubRepo. These are adjacent projects:

RankRepositoryLanguageStarsAction
#602 gradle/gradle Groovy ★ 18.9K Compare ↗
#603 lichess-org/lila Scala ★ 18.8K Compare ↗
#604 tiann/KernelSU Kotlin ★ 18.7K Compare ↗
#605 wled/WLED C++ ★ 18.7K Compare ↗
#606 google/magika Rust ★ 18.7K Compare ↗
#607 facebook/hhvm This Project C++ ★ 18.7K
#607 docusealco/docuseal Ruby ★ 18.6K Compare ↗
#608 nukeop/nuclear TypeScript ★ 18.6K Compare ↗
#609 NVIDIA-NeMo/Speech Python ★ 18.5K Compare ↗
#610 keploy/keploy Go ★ 18.5K Compare ↗
#611 plotly/plotly.js JavaScript ★ 18.4K Compare ↗

Frequently Asked Questions

What does hhvm do? +

A virtual machine for executing programs written in Hack.

What language is hhvm written in? +

The primary language is C++. Topics include: hack, hacklang, hhvm, php.

Is hhvm actively maintained? +

Yes, the last recorded push was on Oct 2, 2026 with 550 open issues being tracked.

How many stars does hhvm have? +

hhvm has 18,663 stars and 3,067 forks on GitHub.

How does hhvm rank among GitHub repositories? +

With 18,663 stars, facebook/hhvm is ranked #607 globally across all repositories tracked on GitHubRepo and #32 among C++ projects.

What license is hhvm distributed under? +

The repository reports a NOASSERTION license. Always verify the repository LICENSE file for legal terms.

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