head to head · open source
roapi vs duckdb-wasm
roapi has 3,434 GitHub stars, 209 forks, 66 open issues and last shipped 6 months ago. duckdb-wasm has 2,121 stars, 227 forks, 189 open issues and last shipped 2 months ago. roapi leads on adoption by 62% (3,434 vs 2,121 stars). roapi is written in Rust under Apache-2.0; duckdb-wasm is written in C++ under MIT. roapi has attracted 6% 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. The two share 1 topic tag (analytics), so they are genuine substitutes rather than adjacent tools.
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
| roapi | duckdb-wasm | |
|---|---|---|
| GitHub stars | ★ 3.4K | ★ 2.1K |
| License | Apache-2.0 | MIT |
| Written in | Rust | C++ |
| Last push | 2026-03-25 | 2026-07-28 |
| Forks | ⑂ 209 | ⑂ 227 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick roapi if
- You weight community size — 3.4K stars and counting
- You want the Apache-2.0 license terms
- Your stack matches Rust
- 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 roapi
ROAPI is a Rust based, Apache 2.0 licensed server that turns static and slowly changing datasets into read only SQL, FlightSQL, GraphQL and REST APIs without requiring a single line of application code, and it is built for data engineers, analysts and developers who need to publish Parquet, CSV, JSON or database tables as queryable endpoints quickly.
read the full roapi 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 roapi or duckdb-wasm more popular?
roapi has 3,434 GitHub stars and duckdb-wasm has 2,121. roapi has the larger community by that measure.
Are roapi and duckdb-wasm free?
Both are open source. roapi is licensed under Apache-2.0 and duckdb-wasm under MIT. Neither carries a licence fee.
What is the difference between roapi and duckdb-wasm?
roapi is written in Rust 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, roapi or duckdb-wasm?
Choose roapi if you want the larger community (3,434 stars) or its Apache-2.0 licence terms. Choose duckdb-wasm if its feature set, stack or MIT licence fits better. Both are self-hostable.