Polypane

Polypane is an advanced web browser built from the ground up to provide web software developers and website designers with a platform on which they can test their cloud-powered creations with an incredible variety of debug tools.

Instead of manually testing all combinations of website rendering for various mobile display sizes, this versatile browser enables users to create a large number of individual browsing viewports with sizes ranging from the smallest mobile screen to the largest 5K displays and test in a real-time manner the rendering features, UI designs, accessibility features, and much more.

When loading a website in Polypane Browser, users can easily break down the rendering pages into dozens of individual view panes that represent various mobile displays. This can help them to quickly and reliably check to resize and UI rendering of their web designs, with automatic syncing of scrolling and clicking on all active view pans. Syncing is so powerful that even hovers are recreated on all active view pans. Even website themes (light and dark) can be checked out quickly in a fully synced side-by-side viewport rendering mode.

(Optional) install the Polypane browser extension

With the Polypane browser extension, you can send any link or tab to Polypane. The extension is available for Chrome.

CSS debugging is made easy, enabling individual panes to be debugged with over 40 individual CSS states, covering categories such as Dev Tools, Simulators, Color Blindness, Visual Impairment, and Others. In addition to website designs, the app can provide pixel-perfect representations of social media sharing cards, with support for all major platforms such as Facebook, Twitter, LinkedIn, Discord, Slack, and others.

And since the app is built on the popular Chromium platform, seasoned designers are empowered to install any of their favorite DevTools browser extensions (such as React DevTools, Vue.js DevTools, Redux DevTools, Angular, and many others) and framework add-ons (React, Vue, Svelte, Bootstrap, Bulma, Foundation, jquery, and more).

This is just the tip of the iceberg of features that the Polypane browser supports. It also provides access to live CSS editing, automated form testing, device presets and device emulation, accessibility audits, live reloading, touch emulation, and so much more.

Free trial - for 14 days

• Full access to the app
• No credit card needed
• Use all features
• Alone or with your team
• Onboarding chat support
• On Win, Mac, and Linux

Business - $39/mo

• The entire team (10 users)
• Use on 3 computers per user
• All features
• Frequent updates
• Email & Live chat support
• Priority feature requests
• Manage user access
• Centralized billing

Due to its professional toolset, Polypane (the browser for ambitious developers) is offered to users only as a premium application that is accessed via monthly subscription in Individual, Business, and Enterprise tiers. Thankfully, users can check out all the features of this app during a free 14-day trial period. The app is optimized for all modern versions of Windows OS and features clients for Linux and macOS platforms.