It suits developers and others who need to inspect or refine patterns for tasks such as log parsing, JSON validation, and string cleanup.
Free plan AndroidiPhone & iPadWebWindowsMacLinux
- Home
- Developer Tools
- Regular Expression Testers
Best Regular Expression Testers 2026
A regular expression tester gives you a way to check patterns against text and inspect how they behave. Compared on regex flavors, pattern explanation, and step-through debugging, the entries can help you focus on language compatibility and how much visibility you want while troubleshooting. Saved patterns and code generation matter if you expect to reuse patterns or move them into a project. Also compare available platforms, free-plan availability, and paid-from pricing. regex101, RegexPilot, and RegexCraft are among the options, with Debuggex and RegexStudio also included. Think about whether your main need is quick validation, understanding a complicated expression, or keeping tested patterns accessible for later work.
02
RegexPilot
It suits Mac users who build or inspect regex patterns and want visual editing, testing, or AI assistance.
WebMacBrowser extension Record5.2 Visit
03
Debuggex
Debuggex suits developers and other users who need to inspect or test regular expressions in JavaScript, Python, or PCRE.
WebSelf-hosted Record5.0 Visit
04
regex101
It suits developers who want to construct and inspect regular expressions across multiple flavors.
WebLinuxAPI+1 Record4.9 Visit
05
RegexCraft
RegexCraft suits people working with regular expressions on Windows, Linux, or macOS, including those who want to compare flavors or inspect matches.
WindowsMacLinux Record4.9 Visit
6
Regex Hero
WebWindows $15 one-time Record4.9 Visit Regex Hero suits people writing or checking regular expressions for .NET applications, particularly those who want live match highlighting or C# and VB.NET code…
8
The Regex Coach
WindowsLinux Free plan Record4.7 Visit It may suit programmers using Perl-compatible regex toolkits such as PCRE or CL-PPCRE who want to inspect matching behavior interactively.
9
RegExr
Web Free plan Record4.5 Visit RegExr suits people learning regular expressions as well as users building and checking patterns.
10
RegexRegex
Web Free plan Record4.5 Visit RegexRegex suits people who want to test JavaScript expressions in a browser, or compose basic patterns with guided controls.
12
Retest
Linux Free plan Record4.5 Visit Retest suits developers who want to create and inspect regular expressions in a Linux terminal.
13
Regex Shuttle
Web Free plan Record4.4 Visit Regex Shuttle suits developers, data analysts, students, and beginners who want to test or learn JavaScript regular expressions in a browser.
14
RegexPlanet
Web Free plan Record4.3 Visit It suits developers who need browser-based regex testing across many engines.
15
RegexStudio
Web Free plan Record4.3 Visit It suits developers and learners working with regular expressions in a browser.
17
SK Play Labs Regex Tester
Web Free plan Record4.3 Visit This tool suits learners and developers who want browser-based regex feedback, syntax explanations, and quick pattern checks.
19
RegEx Visualizer & Explainer
Web Free plan Record4.2 Visit This tool suits developers, students, designers, and other professionals who need to inspect JavaScript regular expressions in a browser.
20
txtnode Regex Tester
Web Free plan Record4.2 Visit It suits developers who want a fast browser utility, along with writers and others who prefer simple tools.
More in Developer Tools
Accessibility Testing Software 169Log Management Software 111AI Coding Assistants 102Package Managers 93AI Agent Platforms 73Reverse Engineering Tools 73Integrated Development Environments 65Software Composition Analysis Software 65Artifact repository software 64Browser Automation Tools 63Version Control Software 62Container Registries 60Code Playground Software 58Continuous Integration Software 58Network Monitoring 55Kubernetes Monitoring 54Database Client Software 53IDE Software 53