Regexer
FreemiumRegexer is an AI tutor for creating and testing regular expressions (regex). You build patterns in a built-in code editor and get instant feedback on whether your regex is valid and what it matches. Matched substrings and replacement results appear right in the console, so you can tweak and experiment freely. Regexer uses a simplified syntax for regex operations, and chat-based tutor support is available if you get stuck.