17.4
AppTools Regex Tester is a browser tool for testing and debugging regular expressions.
Free planAndroidiOSWeb
Best Regular Expression Testers in 2026
Testing a regular expression gives you a way to check how a pattern handles text and investigate unexpected matches. Compare supported regex flavors and pattern explanations, along with step-through debugging when you want to examine behavior in stages. Saved patterns and code generation may matter if you reuse expressions in projects; available platforms, free plans, and paid-from pricing add practical context.…
27.3
Debuggex is an online visual regular-expression tester for JavaScript, Python, and PCRE.
Free planWebSelf-hosted
37.3
Regex Hero is a free .NET regular expression tester for writing patterns and seeing how they match in real time.
Free planWebWindows
- 4
RegexPilot
RegexPilot is a Mac-native visual regex builder with AI for creating, inspecting, and testing regular expressions.
Free planWebExtensionmacOS6.7€19 one-time - 5
regex101
regex101 is an online tool for building, testing, and debugging regular expressions.
Free planWebAPILinuxSelf-hosted6.6From €4.99 a month - 6
RegexCraft
RegexCraft is a desktop workbench for creating and working with regular expressions.
Free planLinuxmacOSWindows6.6$49 one-time - 7
RegexRegex
RegexRegex is a free browser-based tool for composing and checking regular expressions, with JavaScript as its main locally run engine.
Free planWeb6.4Free plan - 8
Retest
Retest is a free, open-source terminal tool for developing and checking regular expressions on Linux.
Free planLinux6.2Free plan - 9
Regex Shuttle
Regex Shuttle is a free browser-based tool for testing, explaining, and learning regular expressions.
Free planWeb6.0Free plan - 10
RegexBuddy
RegexBuddy helps users create, understand, test, debug, use, and save regular expressions.
LinuxWindows6.0£44.95 one-time - 11
RegExr
RegExr is a free web tool for learning, building, and testing regular expressions.
Free planWeb6.0Free plan - 12
SK Play Labs Regex Tester
SK Play Labs Regex Tester is a free browser-based tool for testing regular expressions and learning how patterns work.
Free planWeb6.0Free plan - 13
The Regex Coach
The Regex Coach is a free graphical application for exploring Perl-compatible regular expressions interactively.
Free planLinuxWindows6.0Free plan - 14
RegEx Visualizer & Explainer
RegEx Visualizer & Explainer is a free browser-based tool for testing, understanding, and debugging regular expressions.
Free planWeb5.9Free plan - 15
RegexPlanet
RegexPlanet is a free website for testing regular expressions during development.
Free planWeb5.9Free plan - 16
txtnode Regex Tester
txtnode Regex Tester is a free browser tool for checking regular expressions against text.
Free planWeb5.9Free plan - 17
Regexo
Regexo is a free desktop application for developers who create and test regular expressions.
LinuxmacOSWindows5.8 - 18
Regex Tester Pro
Regex Tester Pro is a browser extension for writing, testing, and debugging regular expressions.
Extension5.6From $4.99 a month - 19
RegexStudio
RegexStudio is a free, open-source web workbench for testing and debugging regular expressions.
Web5.6 - 20
Regulex
Regulex is a JavaScript regular expression parser and visualizer for JavaScript/ECMAScript patterns.
WebLinux5.5 - 21
RegexAssistant
RegexAssistant is a free, open-source Windows desktop tool for creating and testing regular expressions.
Windows5.4 - 22
RegEx Tester
RegEx Tester is a free, open-source web tool for checking regular-expression patterns against sample text.
Web5.2 - 234.7