head to head · open source
devdocs vs pg-aiguide
devdocs has 39,466 GitHub stars, 2,645 forks, 196 open issues and last shipped yesterday. pg-aiguide has 1,848 stars, 109 forks, 8 open issues and last shipped 4 days ago. devdocs leads on adoption by 2,036% (39,466 vs 1,848 stars). devdocs is written in Ruby under MPL-2.0; pg-aiguide is written in Python under Apache-2.0. devdocs has attracted 7% as many forks as stars, pg-aiguide 6%. devdocs was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (docs, documentation), 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
| devdocs | pg-aiguide | |
|---|---|---|
| GitHub stars | ★ 39K | ★ 1.8K |
| License | MPL-2.0 | Apache-2.0 |
| Written in | Ruby | Python |
| Last push | 2026-09-19 | 2026-09-16 |
| Forks | ⑂ 2.6K | ⑂ 109 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick devdocs if
- You weight community size — 39K stars and counting
- You want the MPL-2.0 license terms
- Your stack matches Ruby
- You value the larger contributor base for long-term maintenance
pick pg-aiguide if
- You want the pg-aiguide 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 pg-aiguide fits your workflow better
About devdocs
DevDocs is an API documentation browser that combines multiple developer documentations into a single, clean and organized web UI with instant search, offline support, a mobile version, a dark theme and keyboard shortcuts, and it is aimed at developers who need to read and search API and reference documentation quickly.
read the full devdocs overview →
About pg-aiguide
pg aiguide is an Apache 2.0 MCP server and Claude Code plugin that gives AI coding agents version aware PostgreSQL documentation and curated best practice skills, built for developers and teams whose assistants write outdated or incomplete Postgres code.
read the full pg-aiguide overview →
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Frequently asked questions
Is devdocs or pg-aiguide more popular?
devdocs has 39,466 GitHub stars and pg-aiguide has 1,848. devdocs has the larger community by that measure.
Are devdocs and pg-aiguide free?
Both are open source. devdocs is licensed under MPL-2.0 and pg-aiguide under Apache-2.0. Neither carries a licence fee.
What is the difference between devdocs and pg-aiguide?
devdocs is written in Ruby and pg-aiguide 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, devdocs or pg-aiguide?
Choose devdocs if you want the larger community (39,466 stars) or its MPL-2.0 licence terms. Choose pg-aiguide if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.