WebBrowserTools
The community of open-source projects to help improve the privacy and security of your online appearance
Device Info - Web browser security, privacy, and troubleshooting tool.
Device Info is a web browser security testing, privacy testing, and troubleshooting tool.
Wannabrowser
With Wannabrowser you can mimic any User-Agent and look at the HTML-Sourcecode. Be a Bot, Browser, Tool on Smartphone, Desktop or Tablet.
chrome.google.com/webstore/detail/webcache/cmmlgikpahieigpcclckfmhnchdlfnjd
Want to view a cached website? With WebCache it takes 1 click to view the Google Cache, Wayback Machine, Archive.is, or Coral CDN!
Webrecorder
Collect and revisit web pages Free, open-source web archiving service.