Cyrilex is a visual regex tester.
Try the demo here: https://extendsclass.com/regex-tester.html
This tool uses:
- codeMirror (MIT license)
- regulex (MIT license)
- randexp.js (MIT license)
- github corners (MIT license)
Drop the files into a directory (on a server or on your PC) and then visit in a browser.
Not implemented yet.