head to head · open source
duckdb vs warmbly
duckdb has 42,747 GitHub stars, 4,176 forks, 858 open issues and last shipped yesterday. warmbly has 866 stars, 159 forks, 17 open issues and last shipped yesterday. duckdb leads on adoption by 4,836% (42,747 vs 866 stars). duckdb is written in C++ under MIT; warmbly is written in Go under Apache-2.0. duckdb has attracted 10% as many forks as stars, warmbly 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 | warmbly | |
|---|---|---|
| GitHub stars | ★ 43K | ★ 866 |
| License | MIT | Apache-2.0 |
| Written in | C++ | Go |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 4.2K | ⑂ 159 |
| 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 warmbly if
- You want the warmbly feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches Go
- You evaluated both and warmbly 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 warmbly
The open source agentic cold email and warmup platform. Features · How it works · Quick start · Self hosting · Docs · Community · Support ⭐ Help us reach more senders and grow the Warmbly community. Star this repo! Warmbly Warmbly runs cold email campaigns from the mailboxes you already own and warms them so they keep landing in the inbox. Opens, clicks, and replies land in a shared dashboard the moment they happen, and it's AI native, so your team and its agents work in it together, live. Features Campaigns multi step sequences with per mailbox caps and spacing Unified inbox every mailbox and reply in one place…
read the full warmbly overview →
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Frequently asked questions
Is duckdb or warmbly more popular?
duckdb has 42,747 GitHub stars and warmbly has 866. duckdb has the larger community by that measure.
Are duckdb and warmbly free?
Both are open source. duckdb is licensed under MIT and warmbly under Apache-2.0. Neither carries a licence fee.
What is the difference between duckdb and warmbly?
duckdb is written in C++ and warmbly in Go. 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 warmbly?
Choose duckdb if you want the larger community (42,747 stars) or its MIT licence terms. Choose warmbly if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.