Unlimited Regex

See every match as you type, then find out why: plain-language explanations, railroad diagrams, a backtracking trace, and every major flavour to convert between.

Unlimited Regex is a native tool for writing and testing regular expressions, with immediate feedback as you type.

• Match: see matches highlighted live against your own sample text
• Explain: a plain language breakdown of what each part of the pattern does
• Test: try multiple flavors and dialects, sample inputs side by side
• Save: keep a library of patterns you use often

No account, no subscription, no purchases inside the app, no ads, no analytics, and no tracking.