head to head · open source
Billion Mail vs duckdb-wasm
Billion Mail has 15,619 GitHub stars, 1,704 forks, 236 open issues and last shipped 3 months ago. duckdb-wasm has 2,121 stars, 227 forks, 189 open issues and last shipped 2 months ago. Billion Mail leads on adoption by 636% (15,619 vs 2,121 stars). Billion Mail is written in Go under AGPL-3.0; duckdb-wasm is written in C++ under MIT. Billion Mail has attracted 11% as many forks as stars, duckdb-wasm 11%. duckdb-wasm 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
| Billion Mail | duckdb-wasm | |
|---|---|---|
| GitHub stars | ★ 16K | ★ 2.1K |
| License | AGPL-3.0 | MIT |
| Written in | Go | C++ |
| Last push | 2026-06-11 | 2026-07-28 |
| Forks | ⑂ 1.7K | ⑂ 227 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Billion Mail if
- You weight community size — 16K stars and counting
- You want the AGPL-3.0 license terms
- Your stack matches Go
- You value the larger contributor base for long-term maintenance
pick duckdb-wasm if
- You want the duckdb-wasm feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches C++
- You evaluated both and duckdb-wasm fits your workflow better
About Billion Mail
BillionMail is an open source mail server and email marketing platform written in Go and released under the AGPL 3.0 license. It lives in the self hosted email ecosystem and is described as a solution for newsletters, promotional emails, and transactional messages. The project combines mail server topics such as Postfix, Dovecot, Rspamd, and SMTP with campaign features such as customer management, analytics, templates, and sending control.
read the full Billion Mail overview →
About duckdb-wasm
DuckDB Wasm is the WebAssembly build of DuckDB, an in process SQL OLAP database management system, that runs analytical SQL queries entirely inside a web browser or a Node.js process — built for front end developers and data engineers who want full OLAP query power on data that already sits on the client, without standing up a server.
read the full duckdb-wasm overview →
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Frequently asked questions
Is Billion Mail or duckdb-wasm more popular?
Billion Mail has 15,619 GitHub stars and duckdb-wasm has 2,121. Billion Mail has the larger community by that measure.
Are Billion Mail and duckdb-wasm free?
Both are open source. Billion Mail is licensed under AGPL-3.0 and duckdb-wasm under MIT. Neither carries a licence fee.
What is the difference between Billion Mail and duckdb-wasm?
Billion Mail is written in Go and duckdb-wasm in C++. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Billion Mail or duckdb-wasm?
Choose Billion Mail if you want the larger community (15,619 stars) or its AGPL-3.0 licence terms. Choose duckdb-wasm if its feature set, stack or MIT licence fits better. Both are self-hostable.