Life & fun · alternatives · 2026

24 alternatives to BrowserSync

Keep multiple browsers & devices in sync when building sites

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. BrowserSync launched in 2014; newer entries below may have overtaken it.

1. 1
   Sync UI▲5

   Develop & test across multiple browsers simultaneously

   2015 · its alternatives →

2. 2
   Stash▲140

   Syncs your fav links across multiple browsers & accounts

   2023 · rafaelgandi.notion.site · its alternatives →

3. 3
   Fluid Browser▲156

   Transparent floating browser built for multitasking

   2016 · its alternatives →

4. 4
   Stack 3.0▲279

   Smart browser for internet multitaskers

   2020 · stackbrowser.com · its alternatives →

5. 5
   I saw this mind-blowing experiment, so I made a simple version of it▲403

   Two browser windows (acting as socket clients) communicate their: - Screen dimensions - (screen.width, screen.height) - Window dimensions - (window.innerWidth, window.innerHeight) - Window X/Y position - (window.screenX, window.screenY) ...or whichever calculation works best for you. The original work by Bjorn Staal https://twitter.com/_nonfigurativ_/status/172732259457002734 used localStorage, but I found sockets more fun, because if tweaked a bit, this can be shared with friends. Here's a demo of how it works and the codebase:…

   2023 · github.com · its alternatives →

6. 6
   Multiwindows Browser for iOS▲83

   Desktop-like draggable, resizable browser windows for iOS

   2023 · multiwindowbrowser.vercel.app · its alternatives →

7. 7
   Multiple.js▲147

   Sharing background across multiple elements using CSS

   2016 · multiple.js.org · its alternatives →

8. 8
   Layer▲175

   Making your browser multiplayer

   2023 · layer.app · its alternatives →

9. 9
   Polypane▲192

   The browser for building great web experiences

   2019 · polypane.app · its alternatives →

10. 10
    BrowSync▲6

    Cross-Browser Routing & Sync Hub

    Jul 2026 · browsync.ct106.com · its alternatives →

11. 11
    Fleet▲80

    Self-refreshing multipage/view web browser

    2017 · apps.apple.com · its alternatives →

12. 12
    SyncVariables▲145

    Keep your website current – no coding required

    2024 · syncvariables.com · its alternatives →

13. 13
    Am I Responsive▲108

    see your website in multiple screen resolutions

    2014 · fireship.dev · its alternatives →

14. 14
    nunchuck.js▲24

    Multi-device in-browser hardware data synchronization

    2014 · its alternatives →

15. 15
    across-tabs▲90

    Easily communicate among browser tabs

    2017 · engineering.wingify.com · its alternatives →

16. 16
    Multi-browser Screenshots▲173

    See how a webpage renders across many browsers & devices

    2018 · chromewebstore.google.com · its alternatives →

17. 17
    Byte▲139

    Shareable screens that link to each other and the web

    2015 · its alternatives →

18. 18
    BrowserHub▲101

    Create rules to open certain websites on a specific browser

    2016 · its alternatives →

19. 19
    BookmarkFS – Store files as Chrome bookmarks that sync between devices▲79

    Exploit chrome's profile sync for free cloud storage - velzie/bookmarkfs

    2022 · github.com · its alternatives →

20. 20
    RemoteStorage – sync localStorage across devices and browsers▲129

    Hey HN! Wanted to share a new library and server I've recently been working on called remoteStorage. When building frontends with Javascript, the native localStorage API is super useful for keeping track of state between sessions in the same browser, but it's not as good a solution when your data needs to be shared across multiple devices or browsers. For instance, let's say you want to show a welcome modal to all new users that sign up for your product. If you use localStorage to track if a user has already seen this modal, your users will end up getting the experience repeatedly every time…

    2024 · github.com · its alternatives →

21. 21
    SessionBox▲12

    Use one browser with multiple active sessions per site

    2016 · sessionbox.io · its alternatives →

22. 22
    Timeful▲78

    Design web apps and sync with your own codebase

    24d ago · timeful.io · its alternatives →

23. 23
    Signage Sync▲11

    Hi guys, I'm sharing something I've been tinkering on for a while: https://signagesync.app/ Like Google Chromecast, but "cast" to multiple screens at once. Create a playlist of auto-refreshing web pages, videos, and even live streams (but not supported on Windows). Also works with local network, e.g. http://192.168.../sales-dashboard It's still early (MVP), but already usable—and I'd love to hear your feedback. Tech stack: SvelteKit, WebSocket, Flutter (desktop)

    2025 · signagesync.app · its alternatives →

24. 24
    SyncUI Browser▲19

    The browser for developers. Code more. Test less.

    2015 · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →