head to head · open source
gollum vs pg-aiguide
gollum has 14,325 GitHub stars, 1,560 forks, 91 open issues and last shipped 10 months ago. pg-aiguide has 1,848 stars, 109 forks, 8 open issues and last shipped 4 days ago. gollum leads on adoption by 675% (14,325 vs 1,848 stars). gollum is written in Ruby under MIT; pg-aiguide is written in Python under Apache-2.0. gollum has attracted 11% 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 1 topic tag (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
| gollum | pg-aiguide | |
|---|---|---|
| GitHub stars | ★ 14K | ★ 1.8K |
| License | MIT | Apache-2.0 |
| Written in | Ruby | Python |
| Last push | 2025-11-24 | 2026-09-16 |
| Forks | ⑂ 1.6K | ⑂ 109 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick gollum if
- You weight community size — 14K stars and counting
- You want the MIT 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 gollum
Gollum is a simple wiki system built on top of Git. A Gollum wiki is simply a Git repository of a specific nature: its contents are human editable text or markup files, pages may be organized into directories in any way the author chooses, and other content such as images, PDFs, and headers or footers for pages can also be included. Pages may be written in a variety of markups, edited either with a favourite editor (changes become visible after committing) or through the built in web interface, and displayed in all versions or reverted. The project lives in the Ruby ecosystem, is distributed under the MIT license…
read the full gollum 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aware PostgreSQL documentation and curated best practice skills, built for developers and teams whose assistants write outdated or incomplete Postgres code.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 gollum or pg-aiguide more popular?
gollum has 14,325 GitHub stars and pg-aiguide has 1,848. gollum has the larger community by that measure.
Are gollum and pg-aiguide free?
Both are open source. gollum is licensed under MIT and pg-aiguide under Apache-2.0. Neither carries a licence fee.
What is the difference between gollum and pg-aiguide?
gollum 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, gollum or pg-aiguide?
Choose gollum if you want the larger community (14,325 stars) or its MIT licence terms. Choose pg-aiguide if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.