head to head · open source
devdocs vs pg-aiguide
devdocs has 39,462 GitHub stars, 2,643 forks, 196 open issues and last shipped 3 days ago. pg-aiguide has 1,843 stars, 108 forks, 8 open issues and last shipped 2 days ago. devdocs leads on adoption by 2,041% (39,462 vs 1,843 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%. pg-aiguide 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 | 2026-09-15 | 2026-09-16 |
| Forks | ⑂ 2.6K | ⑂ 108 |
| 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 AI optimized PostgreSQL expertise for coding assistants pg aiguide helps AI coding tools write dramatically better PostgreSQL code. It provides: Semantic search across the official PostgreSQL manual (version aware) AI optimized “skills” — curated, opinionated Postgres best practices used automatically by AI agents Extension ecosystem docs , starting with TimescaleDB, with more coming soon Use it as: Agent Skills via npx skills — works with Claude Code, Cursor, Codex, Gemini CLI, and 40+ other agents a public MCP server that can be used with any AI coding agent, or a Claude Code plugin optimized for use…
read the full pg-aiguide overview →
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Frequently asked questions
Is devdocs or pg-aiguide more popular?
devdocs has 39,462 GitHub stars and pg-aiguide has 1,843. 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 (39,462 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.