Proxyman.io - Proxyman is a high-performance macOS app, which enables developers to view HTTP/HTTPS requests from apps and domains.
Rage Grade by FullStory - Benchmark your customer frustration
RegExr - RegExr.com is an online tool to learn, build, and test Regular Expressions.
Shuffle for Bootstrap - Bootstrap drag and drop builder for busy developers.
Regulex - Open-source, regular expression parser and visualizer.
Tailwind CSS - A utility-first CSS framework for rapidly building custom user interfaces.