Debuggex

Debuggex is ranked #4 of 23 in regular expression testers on The Geeks Club. It runs on Web. There is a free plan. Paid plans start at $5/mo.

Debuggex plans and pricing

All plans

Free Free 0 per month Regex Visualizer · Regex Debugger · JavaScript Engine · Python Engine (free while in beta) · PCRE Engine (free while in beta) · Save 2 Unit Tests per Regex · Save 10 Public Expressions debuggex.com · 30 Sept 2026

Basic $5/mo 5 per month Save 5 Unit Tests per Regex · Save Unlimited Public Expressions · Save 20 Private Expressions · Plain-English Regex Explanation · Regex Replace · Unit-Tested Regex Repository · Composability Using Repository debuggex.com · 30 Sept 2026

Pro $15/mo 15 per month Save Unlimited Unit Tests per Regex · Save Unlimited Private Expressions · Composability Using Any Expressions · Performance Debugging · Unit Test Coverage debuggex.com · 30 Sept 2026

Enterprise Not published CONTACT FOR DETAILS Denial-of-Service Prevention · Flexible Number of Users · Optional Private Server Deployment · Optional OEM License · Optional On-site Training debuggex.com · 30 Sept 2026

Compared on regular expression testers

Free plan: Yes
Regex flavors: JavaScript, Python, PCRE
Pattern explanation: Yes
Step-through debugger: Yes
Code generation: Yes
Saved patterns: Yes
Available platforms: web

Best Debuggex alternatives

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6.8 The Regex Coach Free plan

6.7 RegEx Visualizer & Explainer Free plan

6.4 RegexStudio

Debuggex

Product: Debuggex describes itself as an online visual regex tester for JavaScript, Python, and PCRE.
Visual debugging: The product provides visual and text modes for examining regular expressions.
Built-in testing: Users can add unit tests and check whether matches and subgroups behave as expected when a regex changes.
Regex repository: Debuggex offers a repository of pre-built expressions, with unit tests for repository regexes.
Sharing: Users can share a link that returns to the same expression and embed an expression in a StackOverflow answer.
Code snippets: The product can generate a code snippet from a regex, while the free tier excludes snippets using expressions from the library.
Integrations: The site offers an embed option for StackOverflow and lists Google Analytics and Mozilla Persona in its privacy policy.
Privacy: The privacy policy says Debuggex does not sell collected user data to third parties without express permission and stores only the account email, not the password.
Expression visibility: The privacy policy says saved or shared expressions are viewable by anyone with the link and that previous versions are stored after updates.
Enterprise deployment: The Enterprise plan lists optional private server deployment, denial-of-service prevention, flexible user counts, an OEM license, and on-site training.
Support contact: The site lists [email protected] as its contact address.
Price from: $5/mo

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Where it ranks on The Geeks Club

Best Regular Expression Testers in 2026#4 of 23

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Sources

debuggex.com· checked 30 Sept 2026
debuggex.com/blog/2013/a-true-regex-tester/· checked 30 Sept 2026
debuggex.com/blog/2013/a-composable-regex-repository· checked 30 Sept 2026
debuggex.com/privacy· checked 30 Sept 2026
debuggex.com/pricing· checked 30 Sept 2026