Based on our record, Responsive Viewer seems to be more popular. It has been mentiond 2 times since March 2021. We are tracking product recommendations and mentions on various public social media platforms and blogs. They can help you identify which product is more popular and what people think of it.
Bonus! Useful Chrome extension for Responsiveness Testing. - Source: dev.to / about 1 year ago
This chrome extension with all of the breakpoints set up https://chrome.google.com/webstore/detail/responsive-viewer/inmopeiepgfljkpkidclfgbgbmfcennb. Source: over 1 year ago
Responsive View - Test your responsive design across different devices
UXCam - UXCam is the market leader for qualitative app analytics. UXCam provides instant insight into customer behavior in the app through deep analysis of user sessions, events, screen flows, heatmaps, and interactions.
Multi Screen Test - Test your site at different screen resolutions & devices.
UXTesting - Discover how your mobile users feel
Responsinator - Designed to test responsive websites on different devices.
Mupixa - Mockup analytics. Understand your future clients today!