I love this tool. I have customized Emacs keybindings that open RegExr in a xwidget-webkit instance, type in regexes, and exit RegExr with the regex inserted at

I love this tool. I have customized Emacs keybindings that open RegExr in a xwidget-webkit instance, type in regexes, and exit RegExr with the regex inserted at the cursor. Great for reading monstrous regexes or sharpening my regex skills.