Sizzy alternative: Breakpane and Sizzy compared

The short version

• Pick Sizzy if you want a complete workspace: several synced devices, terminals, your dev command running inside the app, a screenshot studio and Claude Code or Codex in a chat next to it. It also runs on Linux and has a lifetime license.
• Pick Breakpane if you want to stay in your own editor and terminal, with the device floating in front, the Safari or Chrome toolbar and installed-app mode, and you want the agent you already use to test the site over MCP.

Side by side

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

	Breakpane	Sizzy
Platforms	macOS 13 or later, Windows 10 and 11	macOS (Apple silicon and Intel), Windows and Linux
Price	$9 a month or $79 a year	$15 a month, $144 a year ($12 a month) or $499 lifetime
Free trial	14 days, no card	Not advertised on the pricing page
How it shows your site	One device per window, floating over the desktop and always on top	Several devices in a workspace, with synced scrolling, clicks, typing and navigation
Framed devices	Yes: 41 framed devices (iPhone, Android, foldables, tablets, laptops and monitors) plus a custom one	Yes: device frames, minimal headers and custom devices
Browser toolbar	Safari or Chrome toolbar drawn in, taking the height it takes on the device	Not advertised
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: each project stores its local URL and dev command, which runs in the Processes tab
Coding agents	Yes, in Beta: a local MCP server; your agent (Claude Code, Codex, Cursor and others) opens devices, taps, scrolls and audits	Yes: chats with your installed Claude Code or Codex inside Sizzy, with device screenshots attached to prompts
Real Safari	No: the engine is Chromium, with the iPhone’s look and measurements	No: the engine is Chromium, as its own site states

Where Sizzy is stronger

• Everything in one place. Projects, synced devices, docked terminals, the dev process and agent chats live in the same window. Breakpane is only the device: your editor and terminal stay your own.
• Many devices at once. Sizzy syncs scrolling, clicks, typing and navigation between devices. Breakpane shows one device per window.
• Screenshots and recording. Sizzy has a Photo Studio (devices arranged on a canvas with themes) and recording. Breakpane captures the device with or without its frame.
• Linux and a lifetime license. Sizzy runs on Linux and sells a one-time license. Breakpane runs on macOS and Windows, subscription only.

Where Breakpane is different

• It sits on top of your editor. The device floats in front of the editor and terminal you already use, always visible. Save a file and see the result without switching windows.
• The browser toolbar and the installed app. The Safari or Chrome toolbar takes the height on the device that 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.
• The agent comes to the device, not the other way around. Breakpane is an MCP server: the agent you already use in your terminal or editor (Claude Code, Codex, Cursor, VS Code, Windsurf) opens devices, taps, types, scrolls, takes screenshots and runs an audit, and you watch every gesture on the device. This feature is in Beta.
• Price and trial. $9 a month, with a 14-day free trial and no card.

How to decide

The question is where you want to spend your day. If you like trading your editor and terminal for a workspace that brings everything together, Sizzy was built for that. If your editor and terminal are already set up the way you like and all that’s missing is the device in front of you, Breakpane fits there. Try both on the same project for a day.

Neither runs iPhone Safari. For iOS behavior, 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.

Also weighing Polypane? See the Polypane alternative comparison.

Sources

• Sizzy pricing: sizzy.co/pricing, checked on 2026-10-21.
• Sizzy features: sizzy.co and sizzy.co/features, checked on 2026-10-21.
• Breakpane pricing: breakpane.com/en/pricing. Devices: breakpane.com/en/devices. Agents: breakpane.com/en/agents.