head to head · open source
preswald vs OpenOutreach
preswald has 4,270 GitHub stars, 647 forks, 330 open issues and last shipped 5 months ago. OpenOutreach has 3,494 stars, 629 forks, 1 open issues and last shipped 13 days ago. preswald leads on adoption by 22% (4,270 vs 3,494 stars). preswald is written in Python under Apache-2.0; OpenOutreach is written in Python under GPL-3.0. preswald has attracted 15% as many forks as stars, OpenOutreach 18%. OpenOutreach 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
| preswald | OpenOutreach | |
|---|---|---|
| GitHub stars | ★ 4.3K | ★ 3.5K |
| License | Apache-2.0 | GPL-3.0 |
| Written in | Python | Python |
| Last push | 2026-06-11 | 2026-10-23 |
| Forks | ⑂ 647 | ⑂ 629 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick preswald if
- You weight community size — 4.3K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Python
- You value the larger contributor base for long-term maintenance
pick OpenOutreach if
- You want the OpenOutreach feature set and don't need the biggest community
- You prefer the GPL-3.0 license terms
- Your stack matches Python
- You evaluated both and OpenOutreach fits your workflow better
About preswald
Create interactive data apps with a full data stack that runs in the browser (no local dependencies!),runs offline, and is shareable in a single file. What is Preswald? Preswald is a static site generator for building interactive data apps in Python. It packages compute, data access, and UI into self contained data apps that run locally in the browser. Built on a WASM runtime with Pyodide and DuckDB, Preswald enables portable, file based apps that are fast, reactive, and shareable. You can think of Preswald as a lightweight alternative to heavier web app platforms. It provides built in UI components and reactive…
read the full preswald overview →
About OpenOutreach
OpenOutreach — open source AI agent for B2B lead generation Describe your product. Define your target market. The AI finds the people who fit, tells you why each one does, and emails them. Self hosted CLI. One install, one onboarding, one command. Demo 🚀 What is OpenOutreach? OpenOutreach is a self hosted, open source lead finder that qualifies for you — and then writes the email. You describe your product and your target market; it discovers matching people from a licensed data provider , judges each one against the ICP it learned from your description, hands you the ones that fit with the reason each was…
read the full OpenOutreach overview →
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Frequently asked questions
Is preswald or OpenOutreach more popular?
preswald has 4,270 GitHub stars and OpenOutreach has 3,494. preswald has the larger community by that measure.
Are preswald and OpenOutreach free?
Both are open source. preswald is licensed under Apache-2.0 and OpenOutreach under GPL-3.0. Neither carries a licence fee.
What is the difference between preswald and OpenOutreach?
preswald is written in Python and OpenOutreach 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, preswald or OpenOutreach?
Choose preswald if you want the larger community (4,270 stars) or its Apache-2.0 licence terms. Choose OpenOutreach if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.