head to head · open source
excelize vs ua-parser-js
excelize has 20,918 GitHub stars, 1,949 forks, 131 open issues and last shipped 2 days ago. ua-parser-js has 10,189 stars, 1,217 forks, 14 open issues and last shipped 17 days ago. excelize leads on adoption by 105% (20,918 vs 10,189 stars). excelize is written in Go under BSD-3-Clause; ua-parser-js is written in JavaScript under AGPL-3.0. excelize has attracted 9% as many forks as stars, ua-parser-js 12%. 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 | ua-parser-js | |
|---|---|---|
| GitHub stars | ★ 21K | ★ 10K |
| License | BSD-3-Clause | AGPL-3.0 |
| Written in | Go | JavaScript |
| Last push | 2026-09-16 | 2026-09-01 |
| Forks | ⑂ 1.9K | ⑂ 1.2K |
| 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 ua-parser-js if
- You want the ua-parser-js feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches JavaScript
- You evaluated both and ua-parser-js 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 ua-parser-js
UAParser.js is a dependency free JavaScript library for user agent detection that identifies browsers, operating systems, devices, bots, apps, and AI crawlers, running both in the browser (client side) and in Node.js (server side), and it is aimed at web developers, analytics teams, and product engineers who need to classify the traffic reaching their applications.
read the full ua-parser-js overview →
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Frequently asked questions
Is excelize or ua-parser-js more popular?
excelize has 20,918 GitHub stars and ua-parser-js has 10,189. excelize has the larger community by that measure.
Are excelize and ua-parser-js free?
Both are open source. excelize is licensed under BSD-3-Clause and ua-parser-js under AGPL-3.0. Neither carries a licence fee.
What is the difference between excelize and ua-parser-js?
excelize is written in Go and ua-parser-js in JavaScript. 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 ua-parser-js?
Choose excelize if you want the larger community (20,918 stars) or its BSD-3-Clause licence terms. Choose ua-parser-js if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.