head to head · open source
lighthouse vs bernstein
lighthouse has 31,005 GitHub stars, 9,785 forks, 470 open issues and last shipped 2 days ago. bernstein has 1,347 stars, 187 forks, 368 open issues and last shipped yesterday. lighthouse leads on adoption by 2,202% (31,005 vs 1,347 stars). lighthouse is written in JavaScript under Apache-2.0; bernstein is written in Python under Apache-2.0. lighthouse has attracted 32% as many forks as stars, bernstein 14%. bernstein was the more recently maintained of the two, and both are self-hostable with no licence fee.
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
| lighthouse | bernstein | |
|---|---|---|
| GitHub stars | ★ 31K | ★ 1.3K |
| License | Apache-2.0 | Apache-2.0 |
| Written in | JavaScript | Python |
| Last push | 2026-11-01 | 2026-11-02 |
| Forks | ⑂ 9.8K | ⑂ 187 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick lighthouse if
- You weight community size — 31K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches JavaScript
- You value the larger contributor base for long-term maintenance
pick bernstein if
- You want the bernstein feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Python
- You evaluated both and bernstein fits your workflow better
About lighthouse
Lighthouse Lighthouse analyzes web apps and web pages, collecting modern performance metrics and insights on developer best practices. Using Lighthouse Using Lighthouse in Chrome DevTools Using the Chrome extension Using the Node CLI CLI options Using the Node module Viewing a report Online Viewer Docs & Recipes Developing Lighthouse Setup Run Tests Docs Associated Products and Projects Lighthouse Integrations in Web Perf services Lighthouse Integrations in non Web Perf services Plugins Related projects FAQ How does Lighthouse work? Can I configure the lighthouse run? How does Lighthouse use network throttling…
read the full lighthouse overview →
About bernstein
"To achieve great things, two things are needed: a plan and not quite enough time." attributed to Leonard Bernstein the open source governance layer for AI agents website · docs · install · first run · glossary · limitations · name policy · discord · sponsor 简体中文 · 繁體中文 · 日本語 · 한국어 · हिन्दी · বাংলা · Русский · Español · Português · Deutsch · Français · Italiano · Nederlands · Polski · Svenska · Suomi · Українська · Türkçe · العربية…
read the full bernstein overview →
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Frequently asked questions
Is lighthouse or bernstein more popular?
lighthouse has 31,005 GitHub stars and bernstein has 1,347. lighthouse has the larger community by that measure.
Are lighthouse and bernstein free?
Both are open source. lighthouse is licensed under Apache-2.0 and bernstein under Apache-2.0. Neither carries a licence fee.
What is the difference between lighthouse and bernstein?
lighthouse is written in JavaScript and bernstein in Python. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, lighthouse or bernstein?
Choose lighthouse if you want the larger community (31,005 stars) or its Apache-2.0 licence terms. Choose bernstein if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.