Lighthouse : Lighthouse is an open-source, automated tool for improving the quality of web pages. You can run it against any web page, public or requiring authenti...
Litmus : Test and track your emails. Email previews, analytics and spam filter testing.
DOM Monster Bookmarklet : DOM Monster is a cross-platform, cross-browser bookmarklet that will analyze the DOM & other features of the page you're on, and give you its bill of ...
Testcontainers : Testcontainers is an open source library for providing throwaway, lightweight instances of databases, message brokers, web browsers, or just about any...
manifestR : manifestR is a bookmarklet, which you drag to your bookmarks bar. Then, when you visit any page, you can click the manifestR button, and it will creat...
an accessibility visualization toolkit that aims to reduce the friction of a11y testing
