Racc is an LALR(1) parser generator. It is written in Ruby itself, and generates ruby programs.
Star History
Momentum
+14
STARS · LAST 30 DAYS
1
PER DAY
#1
MOST-STARRED Yacc
| Window | 7 days | 30 days | 90 days |
|---|---|---|---|
| Stars gained | +7 | +14 | +90 |
| Per day | 1 | 1 | 1 |
| Forks gained | +1 | +3 | +10 |
racc gained 14 stars in the last 30 days, about 1 a day, and now has 569. It is about 18 years old and has averaged roughly 32 stars a year. It ranks #1 among Yacc repositories and #4,032 across all languages on GitHubRepo.
Trending Record
51
DAYS ON TRENDING
#100
BEST RANK
Nov 10, 2008
FIRST APPEARANCE
Active
STATUS TODAY
racc has maintained a continuous presence across global trending indexes, peaking at #100. Below is the 30-day activity profile:
💡 Overview
racc is an open-source project written in Yacc: Racc is an LALR(1) parser generator. It is written in Ruby itself, and generates ruby programs.
Engineered for speed, consistency, and developer ease, it solves common hurdles in lalr-parser-generator, parser-generator. 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 Yacc 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/ruby/racc.git
cd racc⚙ System Requirements
Platforms
- • macOS
- • Linux
- • Windows
Runtime & Dependencies
Yacc environment and standard tooling
Architecture
x86_64, ARM64 (Apple Silicon & Graviton)
🧠 How It Works
racc coordinates its core functionality through a modular Yacc 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 racc into Yacc 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
Install racc using your package manager: `git clone https://github.com/ruby/racc.git`
Initialize your project workspace or configuration file for racc.
Import racc into your codebase or invoke it directly from your terminal.
Execute your test suite or run `racc --help` to verify successful setup.
👍 Strengths
⚠️ Considerations
⇄ Alternatives & Direct Competitors
👥 Who Should Use This
Developers and engineering teams building with Yacc, seeking reliable, tested, and actively maintained tooling for production workloads.
🏆 Nearby in the Rankings
ruby/racc is currently ranked #4,032 by stars across every repository tracked on GitHubRepo. These are adjacent projects:
| Rank | Repository | Language | Stars | Action |
|---|---|---|---|---|
| #4,025 | mozilla/bugbug | Python | ★ 570 | Compare ↗ |
| #4,025 | Azure/azure-dev | Go | ★ 570 | Compare ↗ |
| #4,025 | Fabric-Project/Fabric | Swift | ★ 570 | Compare ↗ |
| #4,025 | Th0rgal/open_oura | Rust | ★ 570 | Compare ↗ |
| #4,025 | Sadpainy/Stuxnet | C | ★ 570 | Compare ↗ |
| #4,032 | ruby/racc This Project | Yacc | ★ 569 | |
| #4,032 | IngmarStein/Monolingual | Swift | ★ 569 | Compare ↗ |
| #4,032 | temporalio/sdk-dotnet | C# | ★ 569 | Compare ↗ |
| #4,034 | libfirm/libfirm | C | ★ 568 | Compare ↗ |
| #4,034 | damianszczepanik/cucumber-reporting | Java | ★ 568 | Compare ↗ |
| #4,034 | frappe/press | Python | ★ 568 | Compare ↗ |
Frequently Asked Questions
What does racc do? +
Racc is an LALR(1) parser generator. It is written in Ruby itself, and generates ruby programs.
What language is racc written in? +
The primary language is Yacc. Topics include: lalr-parser-generator, parser-generator.
Is racc actively maintained? +
Yes, the last recorded push was on Sep 8, 2026 with 12 open issues being tracked.
How many stars does racc have? +
racc has 569 stars and 93 forks on GitHub.
How does racc rank among GitHub repositories? +
With 569 stars, ruby/racc is ranked #4,032 globally across all repositories tracked on GitHubRepo and #1 among Yacc projects.
What license is racc distributed under? +
The repository reports a NOASSERTION license. Always verify the repository LICENSE file for legal terms.
