head to head · open source
duckdb vs mjml
duckdb has 41,440 GitHub stars, 3,798 forks, 858 open issues and last shipped yesterday. mjml has 715 stars, 251 forks, 35 open issues and last shipped 3 months ago. duckdb leads on adoption by 5,696% (41,440 vs 715 stars). duckdb is written in C++ under MIT; mjml is written in TypeScript under BSD-3-Clause. duckdb has attracted 9% as many forks as stars, mjml 35%. 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 | mjml | |
|---|---|---|
| GitHub stars | ★ 41K | ★ 715 |
| License | MIT | BSD-3-Clause |
| Written in | C++ | TypeScript |
| Last push | 2026-09-17 | 2026-06-15 |
| Forks | ⑂ 3.8K | ⑂ 251 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick duckdb if
- You weight community size — 41K stars and counting
- You want the MIT license terms
- Your stack matches C++
- You value the larger contributor base for long-term maintenance
pick mjml if
- You want the mjml feature set and don't need the biggest community
- You prefer the BSD-3-Clause license terms
- Your stack matches TypeScript
- You evaluated both and mjml fits your workflow better
About duckdb
DuckDB is an analytical, in process SQL database management system written in C++ and released under the MIT license. It runs inside the application process rather than as a separate server, and it is distributed as a standalone command line application as well as through clients for Python, R, Java, and WebAssembly. The project lives in the analytical SQL ecosystem, where the topics listed for it are analytics, database, embedded database, OLAP, and SQL. It has been developed for about eight years, with the last push recorded on 15 September 2026.
read the full duckdb overview →
About mjml
GrapesJS MJML is a plugin that enables the use of MJML components inside the GrapesJS environment. It lives in the GrapesJS plugin ecosystem and is distributed on npm as grapesjs mjml . The project is written in TypeScript and released under the BSD 3 Clause license, and it requires GrapesJS v0.15.9 or higher to run.
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Frequently asked questions
Is duckdb or mjml more popular?
duckdb has 41,440 GitHub stars and mjml has 715. duckdb has the larger community by that measure.
Are duckdb and mjml free?
Both are open source. duckdb is licensed under MIT and mjml under BSD-3-Clause. Neither carries a licence fee.
What is the difference between duckdb and mjml?
duckdb is written in C++ and mjml in TypeScript. 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 mjml?
Choose duckdb if you want the larger community (41,440 stars) or its MIT licence terms. Choose mjml if its feature set, stack or BSD-3-Clause licence fits better. Both are self-hostable.