head to head · open source
excelize vs duckdb-wasm
excelize has 20,920 GitHub stars, 1,949 forks, 131 open issues and last shipped today. duckdb-wasm has 2,121 stars, 227 forks, 189 open issues and last shipped 2 months ago. excelize leads on adoption by 886% (20,920 vs 2,121 stars). excelize is written in Go under BSD-3-Clause; duckdb-wasm is written in C++ under MIT. excelize has attracted 9% as many forks as stars, duckdb-wasm 11%. excelize 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
| excelize | duckdb-wasm | |
|---|---|---|
| GitHub stars | ★ 21K | ★ 2.1K |
| License | BSD-3-Clause | MIT |
| Written in | Go | C++ |
| Last push | 2026-09-18 | 2026-07-28 |
| Forks | ⑂ 1.9K | ⑂ 227 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick excelize if
- You weight community size — 21K stars and counting
- You want the BSD-3-Clause 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 excelize
Excelize is a pure Go library for reading and writing XLAM, XLSM, XLSX, XLTM and XLTX spreadsheets, built for Go developers who need to generate or parse Microsoft Excel 2007 and later workbooks directly from their own code.
read the full excelize overview →
About duckdb-wasm
DuckDB Wasm DuckDB is an in process SQL OLAP Database Management System. DuckDB Wasm brings DuckDB to every browser thanks to WebAssembly. Duckdb Wasm speaks Arrow fluently, reads Parquet, CSV and JSON files backed by Filesystem APIs or HTTP requests and has been tested with Chrome, Firefox, Safari and Node.js. Learn more about DuckDB Wasm from our VLDB publication or the recorded talk. Try it out at shell.duckdb.org or at duckdb.org/visualizer. External third party embedding of DuckDB Wasm, read the API documentation, check out the web app examples, and chat with us on Discord. DuckDB and DuckDB Wasm DuckDB Wasm…
read the full duckdb-wasm overview →
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Frequently asked questions
Is excelize or duckdb-wasm more popular?
excelize has 20,920 GitHub stars and duckdb-wasm has 2,121. excelize has the larger community by that measure.
Are excelize and duckdb-wasm free?
Both are open source. excelize is licensed under BSD-3-Clause and duckdb-wasm under MIT. Neither carries a licence fee.
What is the difference between excelize and duckdb-wasm?
excelize 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, excelize or duckdb-wasm?
Choose excelize if you want the larger community (20,920 stars) or its BSD-3-Clause licence terms. Choose duckdb-wasm if its feature set, stack or MIT licence fits better. Both are self-hostable.