No. 12 of 23 ·Regular Expression Testers

RegExr

Web

Freedom report

One barScore 5.2

RegExr is ranked #12 of 23 in regular expression testers on Freedom251. It runs on Web. There is a free plan.

RegExr plans and pricing

RegExr Free Online regex learning, building, and testing tool regexr.com · 5 Oct 2026

Purpose: RegExr is an online tool to learn, build, and test regular expressions.
Live results: Results update in real time as you type.
Match details: Rolling over a match or expression displays details.
Tests: Tests mode lets users build a suite of tests that an expression should or should not match.
Save and share: Users can save and share expressions with others and the Community.
Tools: The Replace and List tools output custom results, and Details lists capture groups.
Explain: The Explain tool describes an expression in plain English.
Learning resources: The site includes a cheatsheet, full reference, help, and examples.
Community: Users can search for and rate Community Patterns.
Account storage: Signing in lets users persist favorites and patterns, which are shown in My Patterns.
Sharing limit: The site says saving creates a shareable public link and that a shared Community copy cannot be edited or deleted.
Creator: The project README says RegExr was created by Grant Skinner and gskinner.com.
License: The project README says this version of RegExr is licensed under GPL v3.
Support: The project README directs users to GitHub for issues and feature requests and Stack Overflow for regular-expression questions.
Price from: Free

Claim it for free: prove the domain, then correct facts, plans and screenshots. An editor reviews every change.