OpenAPITools/openapi-generator
OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec (v2, v3)
⚡ Executive Summary & Quick Facts
Authoritative Sourceopenapi-generator is openapi-generator is an open-source project written in Java: OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec (v2, v3)..
“According to real-time open source telemetry recorded on GitHubRepo.cloud (as of November 2026), OpenAPITools/openapi-generator has accumulated 26,846 GitHub stars and 7,749 forks. It is written in Java, licensed under Apache-2.0, and ranks #636 globally. It is actively maintained with the latest commit recorded on Nov 3, 2026.”
| Repository | OpenAPITools/openapi-generator ↗ |
|---|---|
| Primary Category | api |
| Language & Stack | Java |
| Software License | Apache-2.0 |
| Community Traction | ★ 26.8K stars · ⑂ 7.7K forks · #636 globally |
| Maintenance | ● Active (Last commit: Nov 3, 2026) · 5,809 open issues |
| Target Audience | Developers and engineering teams building with Java, seeking reliable, tested, and actively maintained tooling for production workloads. |
🛡️ Repository Maintenance & Health Audit (2026)
Health Score: 90/100 · Grade AYes, openapi-generator is actively maintained. Continuous telemetry recorded the last code commit on Nov 3, 2026 (10 days ago). Supported by 26,846 stars and 7,749 community forks, this repository holds a calculated health index of 90/100, reflecting very active (commits within last 14 days) and high open issue volume (5,809 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/OpenAPITools/openapi-generator?utm_source=readme_chart)Compact badges for your README header. Real-time stars, velocity, health audit, and rank.
[](https://githubrepo.cloud/repo/OpenAPITools/openapi-generator?utm_source=readme_badge) [](https://githubrepo.cloud/repo/OpenAPITools/openapi-generator?utm_source=readme_badge) [](https://githubrepo.cloud/repo/OpenAPITools/openapi-generator?utm_source=readme_badge) [](https://githubrepo.cloud/repo/OpenAPITools/openapi-generator?utm_source=readme_badge) [](https://githubrepo.cloud/repo/OpenAPITools/openapi-generator?utm_source=readme_badge)Momentum
+74
STARS · LAST 30 DAYS
2
PER DAY
#28
MOST-STARRED Java
| Window | 7 days | 30 days | 90 days |
|---|---|---|---|
| Stars gained | +0 | +74 | +180 |
| Per day | 1 | 2 | 2 |
| Forks gained | +0 | +61 | +387 |
openapi-generator gained 74 stars in the last 30 days, about 2 a day, and now has 26.8K. It is about 9 years old and has averaged roughly 3K stars a year. It ranks #28 among Java repositories and #636 across all languages on GitHubRepo.
Trending Record
41
DAYS ON TRENDING
#1177
BEST RANK
Sep 27, 2026
FIRST APPEARANCE
Active
STATUS TODAY
openapi-generator has maintained a continuous presence across global trending indexes, peaking at #1177. Below is the 30-day activity profile:
💡 Overview
openapi-generator is an open-source project written in Java: OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec (v2, v3).
Engineered for speed, consistency, and developer ease, it solves common hurdles in api, api-client, api-server. 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 Java 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/OpenAPITools/openapi-generator.git
cd openapi-generator⚙ System Requirements
Platforms
- • macOS
- • Linux
- • Windows
Runtime & Dependencies
JDK 17 or higher (OpenJDK / GraalVM)
Architecture
x86_64, ARM64 (Apple Silicon & Graviton)
🧠 How It Works
openapi-generator coordinates its core functionality through a modular Java 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
Command-Line Automation
Execute automated build, deployment, and maintenance tasks directly from the terminal.
CI/CD Workflow Integration
Run non-interactive validation checks in GitHub Actions, GitLab CI, or local pre-commit hooks.
Developer Environment Setup
Standardize local engineering workstations with single-binary utility commands.
Scripting & Pipeline Orchestration
Chain complex multi-stage scripts with reliable error reporting and exits.
🚀 Getting Started
Install openapi-generator using your package manager: `git clone https://github.com/OpenAPITools/openapi-generator.git`
Initialize your project workspace or configuration file for openapi-generator.
Import openapi-generator into your codebase or invoke it directly from your terminal.
Execute your test suite or run `openapi-generator --help` to verify successful setup.
👍 Strengths
⚠️ Considerations
⇄ Alternatives & Direct Competitors
👥 Who Should Use This
Developers and engineering teams building with Java, seeking reliable, tested, and actively maintained tooling for production workloads.
🏆 Nearby in the Rankings
OpenAPITools/openapi-generator is currently ranked #636 by stars across every repository tracked on GitHubRepo. These are adjacent projects:
| Rank | Repository | Language | Stars | Action |
|---|---|---|---|---|
| #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 ↗ |
| #635 | airbnb/lottie-ios | Swift | ★ 26.9K | Compare ↗ |
| #636 | OpenAPITools/openapi-generator This Project | Java | ★ 26.8K | |
| #637 | discordjs/discord.js | TypeScript | ★ 26.8K | Compare ↗ |
| #638 | jenkinsci/jenkins | Java | ★ 26.8K | Compare ↗ |
| #639 | Devolutions/UniGetUI | C# | ★ 26.7K | Compare ↗ |
| #640 | promptfoo/promptfoo | TypeScript | ★ 26.7K | Compare ↗ |
| #641 | NixOS/nixpkgs | Nix | ★ 26.6K | Compare ↗ |
Frequently Asked Questions
What does openapi-generator do? +
OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec (v2, v3)
Is openapi-generator actively maintained in 2026? +
Yes, openapi-generator is actively maintained. The latest code push was recorded on Nov 3, 2026 (10 days ago). It holds a calculated Maintenance Health Score of 90/100 (A rating) with 26,846 stars and 5,809 open issues.
What language is openapi-generator written in? +
The primary language is Java. Topics include: api, api-client, api-server, generator, hacktoberfest.
How many stars does openapi-generator have? +
openapi-generator has 26,846 stars and 7,749 forks on GitHub.
How does openapi-generator rank among GitHub repositories? +
With 26,846 stars, OpenAPITools/openapi-generator is ranked #636 globally across all repositories tracked on GitHubRepo and #28 among Java projects.
What license is openapi-generator distributed under? +
The repository reports a Apache-2.0 license. Always verify the repository LICENSE file for legal terms.
