head to head · open source
PromptHub vs synthadoc
PromptHub has 1,687 GitHub stars, 193 forks, 42 open issues and last shipped 3 days ago. synthadoc has 1,500 stars, 146 forks, 6 open issues and last shipped yesterday. PromptHub leads on adoption by 12% (1,687 vs 1,500 stars). PromptHub is written in TypeScript under AGPL-3.0; synthadoc is written in Python under AGPL-3.0. PromptHub has attracted 11% as many forks as stars, synthadoc 10%. synthadoc was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (cli-tool), 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
| PromptHub | synthadoc | |
|---|---|---|
| GitHub stars | ★ 1.7K | ★ 1.5K |
| License | AGPL-3.0 | AGPL-3.0 |
| Written in | TypeScript | Python |
| Last push | 2026-09-28 | 2026-09-30 |
| Forks | ⑂ 193 | ⑂ 146 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick PromptHub if
- You weight community size — 1.7K stars and counting
- You want the AGPL-3.0 license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick synthadoc if
- You want the synthadoc feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches Python
- You evaluated both and synthadoc fits your workflow better
About PromptHub
PromptHub is an open source, local first desktop workbench for managing prompts, SKILL.md files and agent assets, aimed at individual developers and small teams who work across several AI coding tools and want that material to stay on their own machines.
read the full PromptHub overview →
About synthadoc
Synthadoc is an open source, LLM powered knowledge compilation engine for individuals, small teams, and enterprises who want a structured, local first wiki built from their raw documents rather than a retrieval system that answers queries on the fly.
read the full synthadoc overview →
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Frequently asked questions
Is PromptHub or synthadoc more popular?
PromptHub has 1,687 GitHub stars and synthadoc has 1,500. PromptHub has the larger community by that measure.
Are PromptHub and synthadoc free?
Both are open source. PromptHub is licensed under AGPL-3.0 and synthadoc under AGPL-3.0. Neither carries a licence fee.
What is the difference between PromptHub and synthadoc?
PromptHub is written in TypeScript and synthadoc 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, PromptHub or synthadoc?
Choose PromptHub if you want the larger community (1,687 stars) or its AGPL-3.0 licence terms. Choose synthadoc if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.