Sizzy is described as 'A tool for developing responsive websites crazy-fast' and is a Web Debugger in the web browsers category. There are seven alternatives to Sizzy for a variety of platforms, including Mac, Windows, Linux, Web-based and Google Chrome apps. The best Sizzy alternative is Responsively, which is both free and Open Source. Other great apps like Sizzy are MultiGlancer, Polypane, Blisk and Mobile View.
Develop responsive web apps 5x faster! A must-have DevTool for all Front-End developers that will make your job easier.
United States
MultiGlancer is a minimalist and open-source tool I've developed to streamline the web development process. It allows developers to view their site on multiple web sizes simultaneously on a single screen. Born out of necessity while perfecting my landing page for ArcanePad.
Polypane is a browser built from the ground up to create websites and apps. Polypane is the only browser that lets you develop a website for all viewports and devices at once, and gives you the best overview of them.
Netherlands
EU
Blisk is a browser for web developers, QA engineers, and web designers with built-in mobiles, tablets, laptops, and desktops. It provides teams and freelancers with a workspace to develop and test modern web applications twice faster.
Ukraine
A Chrome extension that overlays real phone and tablet frames over any live website, so you see the desktop and mobile layout side by side at the same time.
ScreenSize.net is a lightweight, zero-clutter web utility designed to streamline the responsive design process. Whether you are a front-end developer building layouts or a UI/UX designer verifying breakpoints, this tool provides instant, accurate data on screen resolutions, CSS...
Responsinator helps website makers quickly get an indication of how their responsive site will look on the most popular devices.
