head to head · open source
nextai-translator vs UserAgent-Switcher
nextai-translator has 24,982 GitHub stars, 1,851 forks, 529 open issues and last shipped 17 days ago. UserAgent-Switcher has 1,516 stars, 189 forks, 150 open issues and last shipped 19 days ago. nextai-translator leads on adoption by 1,548% (24,982 vs 1,516 stars). nextai-translator is written in TypeScript under AGPL-3.0; UserAgent-Switcher is written in JavaScript under MPL-2.0. nextai-translator has attracted 7% as many forks as stars, UserAgent-Switcher 12%. nextai-translator was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (browser-extension), 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
| nextai-translator | UserAgent-Switcher | |
|---|---|---|
| GitHub stars | ★ 25K | ★ 1.5K |
| License | AGPL-3.0 | MPL-2.0 |
| Written in | TypeScript | JavaScript |
| Last push | 2026-09-03 | 2026-09-01 |
| Forks | ⑂ 1.9K | ⑂ 189 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick nextai-translator if
- You weight community size — 25K stars and counting
- You want the AGPL-3.0 license terms
- Your stack matches TypeScript
- You value the larger contributor base for long-term maintenance
pick UserAgent-Switcher if
- You want the UserAgent-Switcher feature set and don't need the biggest community
- You prefer the MPL-2.0 license terms
- Your stack matches JavaScript
- You evaluated both and UserAgent-Switcher fits your workflow better
About nextai-translator
NextAI Translator is an open source, AGPL 3.0 licensed browser extension and cross platform desktop application that performs selected text translation, polishing, and summarization through the ChatGPT API, and it is aimed at readers, writers, and developers who want all three of those operations available on Windows, macOS, and Linux rather than on a single platform.
read the full nextai-translator overview →
About UserAgent-Switcher
UserAgent Switcher is a highly configurable, MPL 2.0 licensed browser extension for Chrome, Firefox, Edge, and Opera that spoofs the User Agent string in HTTP request headers and in the JavaScript navigator objects that pages read, so anyone testing, researching, or deliberately reshaping their browser identity gets one consistent identity across every detection path.
read the full UserAgent-Switcher overview →
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Frequently asked questions
Is nextai-translator or UserAgent-Switcher more popular?
nextai-translator has 24,982 GitHub stars and UserAgent-Switcher has 1,516. nextai-translator has the larger community by that measure.
Are nextai-translator and UserAgent-Switcher free?
Both are open source. nextai-translator is licensed under AGPL-3.0 and UserAgent-Switcher under MPL-2.0. Neither carries a licence fee.
What is the difference between nextai-translator and UserAgent-Switcher?
nextai-translator is written in TypeScript and UserAgent-Switcher 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, nextai-translator or UserAgent-Switcher?
Choose nextai-translator if you want the larger community (24,982 stars) or its AGPL-3.0 licence terms. Choose UserAgent-Switcher if its feature set, stack or MPL-2.0 licence fits better. Both are self-hostable.