Polypane alternative: Breakpane and Polypane compared

The short version

• Pick Polypane if you want to see many screen sizes at once, with synced scrolling and clicks, and you need the accessibility and debugging tools that come with it. It also runs on Linux.
• Pick Breakpane if you want a framed iPhone, Android, iPad or laptop on screen, the Safari or Chrome toolbar and installed-app mode, always on top of your editor, and you want a coding agent to test the site for you.

Side by side

Data from each product’s official site, checked on October 21, 2026.

	Breakpane	Polypane
Platforms	macOS 13 or later, Windows 10 and 11	Windows, macOS and Linux
Price (one person)	$9 a month or $79 a year	€12 a month or €108 a year (€9 a month) on the Individual plan
Free trial	14 days, no card	14 days, no card
How it shows your site	One device per window, floating over the desktop and always on top	Several panes side by side in a browser window, with synced scrolling, clicks and typing
Framed devices	Yes: 41 framed devices (iPhone, Android, foldables, tablets, laptops and monitors) plus a custom one	Not advertised; each pane emulates the device (user agent, touch, safe area, viewport)
Browser toolbar	Safari or Chrome toolbar drawn in, taking the height it takes on the device	Emulates the toolbar’s height difference (the svh unit), shown as a strip
Installed PWA mode	Yes: App mode (standalone) and a Home Screen with your app icon	Not advertised
Live localhost	Yes: opens your dev server directly, no tunnel, and finds the projects in your folder	Yes, with live reloading
Coding agents (MCP)	Yes, in Beta: a local MCP server that Claude Code, Codex, Cursor and others use to open devices, tap, scroll and audit	Not advertised
Accessibility and debugging	Audit through the agents, plus a PWA diagnosis	Accessibility audits, contrast checks, focus order, color blindness simulators and over 40 debug tools
Real Safari	No: the engine is Chromium, with the iPhone’s look and measurements	No: the engine is Chromium

Where Polypane is stronger

• Many screens at once. Polypane puts several viewports in one overview and syncs scrolling, clicks, focus and typing between them. Breakpane shows one device per window.
• Accessibility and debugging tools. Accessibility audits, contrast checks, focus order, color blindness and media simulators (dark mode, reduced motion), a unified console and Web Vitals. The official site lists over 40 debug tools and simulators.
• Linux. Polypane ships Linux builds (.deb and AppImage). Breakpane runs on macOS and Windows only.
• Team plans. Polypane has a Business plan for 2 to 20 seats and an Enterprise plan with SSO. Breakpane has a single per-person plan.

Where Breakpane is different

• The device on top of your code. Breakpane isn’t a browser with panes: it’s a framed phone, tablet or laptop floating above your editor, always on top. Save a file and the device updates without switching windows.
• The browser toolbar and the installed app. The Safari or Chrome toolbar appears on the device and takes the height it takes on a phone. In App mode your site opens as an installed PWA (display-mode: standalone), and the Home Screen shows the icon from your manifest.
• Coding agents. Breakpane runs a local MCP server. Claude Code, Codex, Cursor and other clients open devices, tap, type, scroll, take screenshots and run an audit, and you watch every gesture on the device. This feature is in Beta.

When a Polypane alternative makes sense

Polypane is a strong tool, so an alternative only makes sense when your work looks different from what it’s built for:

• You check one device closely while you code. A floating device stays on top of your editor, instead of a browser window you switch to.
• You need to see the phone itself. The frame, the Safari or Chrome toolbar and the Dynamic Island show how the page looks on a real model.
• You build a PWA. App mode opens your site as it runs once installed, and the Home Screen shows your icon.
• You test with a coding agent. An agent connected over MCP opens the devices, taps and audits while you watch.

If you need many synced panes, Linux or the accessibility tools, stay with Polypane.

How to decide

Both have a 14-day free trial with no card. Open the same project in both during a normal workday and see which one you leave open. If your job is accessibility review and checking many breakpoints at once, Polypane is likely the better fit. If you want the device in front of you while you code, with the browser toolbar and the installed PWA, that is what Breakpane was built for.

Neither runs iPhone Safari. For iOS behavior (the virtual keyboard, native pickers, Web Push), check on a real iPhone or a real-device cloud. The guide How to test a website on iPhone without a Mac walks through the options.

Sources

• Polypane pricing: polypane.app/pricing, checked on 2026-10-21.
• Polypane features: polypane.app and the emulation docs at polypane.app/docs/emulation, checked on 2026-10-21.
• Breakpane pricing: breakpane.com/en/pricing. Devices: breakpane.com/en/devices.