Dev tools · alternatives · 2026

24 alternatives to Viewport

All in one user testing tool for websites on your iOS device

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Viewport launched in 2016; newer entries below may have overtaken it.

1. 1TY
   Test your website on 180+ device viewports (with multi-device mode)▲74

   Hey HN! We do a lot of frontend testing, and one thing we find frustrating is the limited tooling available to observe how a URL renders on different viewports/devices simultaneously. For example, we can use Chrome Inspector's "Device" previews, but we run into the following: - Chrome doesn't keep those devices/viewports up to date, and adding new ones is pretty annoying (we've open sourced our collection of 180+ viewports/dimensions under MIT). - You can’t see multiple viewports at once (and it’s cumbersome switching back and forth) - When you notice a problem, there's no…

   2024 · viewport-tester.com · its alternatives →

2. 2
   InVision + UserTesting▲277

   A free integration for better user research

   2016 · its alternatives →

3. 3
   InVision Mobile Testing▲140

   New free, unlimited user testing for mobile prototypes

   2015 · its alternatives →

4. 4
   Multi Screen Test▲216

   Test your site at different screen resolutions & devices.

   2015 · its alternatives →

5. 5
   Viewport▲54

   Showcase your design process from concept to completion

   2024 · viewport.co · its alternatives →

6. 6
   Responsive View▲216

   Test your responsive design across different devices

   2016 · its alternatives →

7. 7
   Boards by InVision▲268

   Design collaboration reimagined

   2015 · its alternatives →

8. 8
   Mobile FIRST▲207

   Smartphone and tablet simulator in the browser

   2023 · webmobilefirst.com · its alternatives →

9. 9
   Pinpoint▲339

   Markup screenshots on iOS

   2015 · its alternatives →

10. 10
    Monochrome▲88

    Browser with fixed iPhone5 viewport

    2014 · its alternatives →

11. 11
    iDisplay▲159

    Use your iOS/Android device as an extra display

    2016 · its alternatives →

12. 12
    Based▲205

    Sketch UI kit for feeds on iOS, Android and web

    2016 · its alternatives →

13. 13
    Inspect▲206

    Inspect and debug your web apps on iOS & Android devices

    2020 · its alternatives →

14. 14
    Replica 3.0▲334

    Mirror your iOS screen on a modern web browser

    2021 · its alternatives →

15. 15
    Viewports▲97

    Figma plugin to set screen sizes with market share in mind

    2019 · its alternatives →

16. 16
    Inspect – DevTool to debug Safari and WebViews on iOS devices▲75

    Agent-first mobile web debugging for iOS and Android. Give Claude, Codex, Cursor, and other coding agents real-device DOM, console, network, and screenshots.

    2020 · inspect.dev · its alternatives →

17. 17
    Curator▲95

    A visual notes app for iPad

    2014 · its alternatives →

18. 18
    iOS Stack▲213

    A curated collection of iOS resources for app builders

    2016 · its alternatives →

19. 19
    Vision▲126

    Check your sight online

    2015 · its alternatives →

20. 20
    iOS 10 GUI for iPad▲188

    A massive free fully customizable UI Kit

    2017 · its alternatives →

21. 21
    Form▲203

    Interaction & prototyping design tool for iOS apps

    2014 · its alternatives →

22. 22
    Frame.io for iOS▲140

    Real-time video collaboration, now with a native iOS app

    2016 · its alternatives →

23. 23
    Duet Display For iPad Pro▲213

    Re-Engineered for unbelievable performance

    2015 · its alternatives →

24. 24
    Plex 4.0 for iOS▲114

    All your movies, TV shows, music, and photos at your fingers

    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 →