head to head · open source
Bruno vs ruby-openai
Bruno has 47,992 GitHub stars, 3,068 forks, 1,831 open issues and last shipped yesterday. ruby-openai has 3,222 stars, 381 forks, 55 open issues and last shipped 6 months ago. Bruno leads on adoption by 1,390% (47,992 vs 3,222 stars). Bruno is written in JavaScript under MIT; ruby-openai is written in Ruby under MIT. Bruno has attracted 6% as many forks as stars, ruby-openai 12%. Bruno was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (api-client), so they are genuine substitutes rather than adjacent tools.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| Bruno | ruby-openai | |
|---|---|---|
| GitHub stars | ★ 48K | ★ 3.2K |
| License | MIT | MIT |
| Written in | JavaScript | Ruby |
| Last push | 2026-11-02 | 2026-05-01 |
| Forks | ⑂ 3.1K | ⑂ 381 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Bruno if
- You weight community size — 48K stars and counting
- You want the MIT license terms
- Your stack matches JavaScript
- You value the larger contributor base for long-term maintenance
pick ruby-openai if
- You want the ruby-openai feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Ruby
- You evaluated both and ruby-openai fits your workflow better
About Bruno
Bruno Opensource IDE for exploring and testing APIs. English Українська Русский Türkçe Deutsch Français Português (BR) 한국어 বাংলা Español Italiano Română Polski 简体中文 正體中文 العربية 日本語 ქართული Nederlands فارسی Bruno is a new and innovative API client, aimed at revolutionizing the status quo represented by Postman and similar tools out there. Bruno stores your collections directly in a folder on your filesystem. We use a plain text markup language, Bru, to save information about API requests. You can use Git or any version control of your choice to collaborate over your API collections. Bruno is offline only. There…
read the full Bruno overview →
About ruby-openai
Ruby OpenAI Use the OpenAI API with Ruby! 🤖❤️ Stream GPT 5 chats with the Responses API, initiate Realtime WebRTC conversations, and much more... Sponsors InferToGo The inference addon for your PaaS application. SerpApi Search API Enhance your LLM's knowledge with data from search engines like Google and Bing using our simple API. 🎮 Ruby AI Builders Discord 🐦 X 🧠 Anthropic Gem 🚂 Midjourney Gem ♥️ Thanks to all sponsors! Contents Ruby OpenAI Contents Project Policies Installation Bundler Gem install How to use Quickstart With Config Custom timeout or base URI Extra Headers per Client Logging Errors Faraday…
read the full ruby-openai overview →
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Frequently asked questions
Is Bruno or ruby-openai more popular?
Bruno has 47,992 GitHub stars and ruby-openai has 3,222. Bruno has the larger community by that measure.
Are Bruno and ruby-openai free?
Both are open source. Bruno is licensed under MIT and ruby-openai under MIT. Neither carries a licence fee.
What is the difference between Bruno and ruby-openai?
Bruno is written in JavaScript and ruby-openai in Ruby. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Bruno or ruby-openai?
Choose Bruno if you want the larger community (47,992 stars) or its MIT licence terms. Choose ruby-openai if its feature set, stack or MIT licence fits better. Both are self-hostable.