head to head · open source
duckdb vs OpenOutreach
duckdb has 42,747 GitHub stars, 4,176 forks, 858 open issues and last shipped yesterday. OpenOutreach has 3,478 stars, 626 forks, 1 open issues and last shipped 11 days ago. duckdb leads on adoption by 1,129% (42,747 vs 3,478 stars). duckdb is written in C++ under MIT; OpenOutreach is written in Python under GPL-3.0. duckdb has attracted 10% as many forks as stars, OpenOutreach 18%. duckdb 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
| duckdb | OpenOutreach | |
|---|---|---|
| GitHub stars | ★ 43K | ★ 3.5K |
| License | MIT | GPL-3.0 |
| Written in | C++ | Python |
| Last push | 2026-11-02 | 2026-10-23 |
| Forks | ⑂ 4.2K | ⑂ 626 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick duckdb if
- You weight community size — 43K stars and counting
- You want the MIT license terms
- Your stack matches C++
- 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 duckdb
DuckDB DuckDB is a high performance analytical database system. It is designed to be fast, reliable, portable, and easy to use. DuckDB provides a rich SQL dialect with support far beyond basic SQL. DuckDB supports arbitrary and nested correlated subqueries, window functions, collations, complex types (arrays, structs, maps), and several extensions designed to make SQL easier to use. DuckDB is available as a standalone CLI application and has clients for Python, R, Java, Wasm, etc., with deep integrations with packages such as pandas and dplyr. For more information on using DuckDB, please refer to the DuckDB…
read the full duckdb 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 duckdb or OpenOutreach more popular?
duckdb has 42,747 GitHub stars and OpenOutreach has 3,478. duckdb has the larger community by that measure.
Are duckdb and OpenOutreach free?
Both are open source. duckdb is licensed under MIT and OpenOutreach under GPL-3.0. Neither carries a licence fee.
What is the difference between duckdb and OpenOutreach?
duckdb is written in C++ 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, duckdb or OpenOutreach?
Choose duckdb if you want the larger community (42,747 stars) or its MIT licence terms. Choose OpenOutreach if its feature set, stack or GPL-3.0 licence fits better. Both are self-hostable.