The Best Regular Expression Testers in 2026

• 23 tools ranked
• Updated Oct 2026
• Researched from official sources
• Compare tools in this directory
• Sponsor this list

We researched regular expression testers through official websites, including pricing pages, plan tables, and product documentation. Rankings reflect each tool’s core regex workflow, value for money, and verified features for writing, testing, explaining, and debugging patterns against sample text.

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

The full ranking 23 tools, best first

1. 1
   
   regex101 9.4

   Best forTeams needing a full-featured regex workbench

   A broad regex workbench with debugging, explanations, testing, and code generation.

   • Step-through debugger
   • Code generation
   • Saved patterns

   Free plan · 7-day trial Our regex101 verdict → + Compare Visit regex101For vendors Sponsor this spot · #1 · $149/mo →
   9.4/10★★★★★

   Visit regex101
2. 2
   
   RegexStudio 9.2

   Best forOpen-source users wanting deep regex tooling

   Deep regex tooling for developers, learners, and teams who want visual guidance.

   • Step-through debugger
   • Code generation
   • Pattern explanation

   Free plan Our RegexStudio verdict → + Compare Visit RegexStudioFor vendors Sponsor this spot · #2 · $99/mo →
   9.2/10★★★★★

   Visit RegexStudio
3. 3
   
   RegexPilot 9.0

   Best forDevelopers needing broad regex flavor coverage

   A visual regex workspace with 21 authentic engines and VS Code integration.

   • Code generation
   • Saved patterns
   • Pattern explanation

   Free plan · 30-day trial Our RegexPilot verdict → + Compare Visit RegexPilotFor vendors Sponsor this spot · #3 · $79/mo →
   9.0/10★★★★☆

   Visit RegexPilot
4. 4
   
   RegexCraft 8.8

   Best forDesktop users needing cross-platform regex work

   A feature-rich desktop regex workbench with free personal use and a $49 business license.

   • Step-through debugger
   • Code generation
   • Saved patterns

   Free plan Our RegexCraft verdict → + Compare Visit RegexCraftFor vendors Sponsor this spot · #4 · $69/mo →
   8.8/10★★★★☆

   Visit RegexCraft
5. 5
   D
   Debuggex 8.6

   Best forUsers wanting visual testing and test repositories

   A visual regex workspace with debugging, repositories, and unit-test features.

   • Step-through debugger
   • Code generation
   • Saved patterns

   Free plan Our Debuggex verdict → + Compare Visit DebuggexFor vendors Sponsor this spot · #5 · $59/mo →
   8.6/10★★★★☆

   Visit Debuggex
6. 6
   
   RegexBuddy 8.4

   Best forWindows teams needing mature enterprise regex tooling

   A mature Windows regex workbench with deep debugging, conversion, and code-generation tools.

   • Step-through debugger
   • Code generation
   • Saved patterns

   Our RegexBuddy verdict → + Compare Visit RegexBuddy
   8.4/10★★★★☆

   Visit RegexBuddy
7. 7
   
   AppTools Regex Tester 8.2

   Best forFree users wanting safe browser-based testing

   A free browser regex tester with four flavors, local processing, and debugger-style warnings.

   • Step-through debugger
   • Pattern explanation

   Free plan Our AppTools Regex Tester verdict → + Compare Visit AppTools
   8.2/10★★★★☆

   Visit AppTools
8. 8
   
   RegexRegex 8.1

   Best forFree multi-runtime browser testing

   A free browser tester with six runtimes, explanations, previews, and sharing.

   • Code generation
   • Saved patterns
   • Pattern explanation

   Free plan Our RegexRegex verdict → + Compare Visit RegexRegex
   8.1/10★★★★☆

   Visit RegexRegex
9. 9
   
   RegExr 8.0

   Best forOpen-source users wanting community regex tools

   A free, open-source web regex workspace with helpful explanations and testing tools.

   • Saved patterns
   • Pattern explanation

   Free plan Our RegExr verdict → + Compare Visit RegExr
   8.0/10★★★★☆

   Visit RegExr
10. 10
    RT
    Regex Tester Pro 7.9

    Best forChrome users needing compact regex assistance

    A compact Chrome regex toolkit with explanations, exports, and safety analysis.

    • Code generation
    • Saved patterns
    • Pattern explanation

    Free plan Our Regex Tester Pro verdict → + Compare Try Regex Tester Pro
    7.9/10★★★★☆

    Try Regex Tester Pro
11. 11
    
    The Regex Coach 7.7

    Best forFree users wanting a classic debugging tool

    A free classic debugger for Perl-compatible regex matching, explanations, and step-through analysis.

    • Step-through debugger
    • Saved patterns
    • Pattern explanation

    Free plan Our The Regex Coach verdict → + Compare Try The Regex Coach
    7.7/10★★★★☆

    Try The Regex Coach
12. 12
    
    RegexPlanet 7.6

    Best forUsers testing many engines for free

    A free web tester for comparing regex behavior across many engines.

    Free plan Our RegexPlanet verdict → + Compare Visit RegexPlanet
    7.6/10★★★★☆

    Visit RegexPlanet
13. 13
    
    RegEx Visualizer & Explainer 7.5

    Best forJavaScript users needing local debugging

    A focused browser tool for understanding, debugging, and testing JavaScript regular expressions.

    • Step-through debugger
    • Saved patterns
    • Pattern explanation

    Free plan Our RegEx Visualizer & Explainer verdict → + Compare Visit site
    7.5/10★★★★☆

    Visit site
14. 14
    RH
    Regex Hero 7.4

    Best for.NET developers wanting free code generation

    A free .NET-focused tester for live matching, references, completion, and generated code.

    • Code generation

    Free plan Our Regex Hero verdict → + Compare Visit Regex Hero
    7.4/10★★★★☆

    Visit Regex Hero
15. 15
    R
    RegexAssistant 7.3

    Best forWindows users needing implementation-specific testing

    A focused Windows regex utility with live results and six implementation choices.

    • Pattern explanation

    Open source Our RegexAssistant verdict → + Compare Visit RegexAssistant
    7.3/10★★★★☆

    Visit RegexAssistant
16. 16
    
    Regex Shuttle 7.2

    Best forSimple JavaScript testing without an account

    A free JavaScript regex workspace for matching, learning, and quick substitutions.

    • Pattern explanation

    Free plan Our Regex Shuttle verdict → + Compare Visit Regex Shuttle
    7.2/10★★★★☆

    Visit Regex Shuttle
17. 17
    
    RegEx Tester 7.0

    Best forFree users testing common programming flavors

    A focused free tester for common regex flavors, with useful matching and capture controls.

    Free plan Our RegEx Tester verdict → + Compare Visit RegEx Tester
    7.0/10★★★★☆

    Visit RegEx Tester
18. 18
    
    SK Play Labs Regex Tester 6.5

    Best forFree beginners learning JavaScript regex

    A free JavaScript regex tester for learning, checking matches, and understanding patterns.

    • Pattern explanation

    Free plan Our SK Play Labs Regex Tester verdict → + Compare Visit SK Play Labs
    6.5/10★★★☆☆

    Visit SK Play Labs
19. 19
    
    txtnode Regex Tester 6.4

    Best forSimple private JavaScript regex checks

    A focused, private browser tool for checking JavaScript regex patterns live.

    Free plan Our txtnode Regex Tester verdict → + Compare Visit txtnode
    6.4/10★★★☆☆

    Visit txtnode
20. 20
    R
    Regulex 6.2

    Best forDevelopers embedding JavaScript regex diagrams

    A focused JavaScript regex diagramming tool with API and embedding options.

    Open source Our Regulex verdict → + Compare Visit Regulex
    6.2/10★★★☆☆

    Visit Regulex
21. 21
    R
    Regexo 6.1

    Best forJava developers wanting a lightweight desktop tool

    A focused, open-source desktop tester for Java regular expressions.

    • Saved patterns

    Open source Our Regexo verdict → + Compare Visit Regexo
    6.1/10★★★☆☆

    Visit Regexo
22. 22
    R
    Retest 5.9

    Best forLinux users needing minimal CLI match inspection

    A focused Linux CLI for inspecting regex matches, nested groups, ordering, and indexes.

    Open source Our Retest verdict → + Compare Visit Retest
    5.9/10★★★☆☆

    Visit Retest
23. 23
    RP
    Regex Playground 5.8

    Best forUsers needing only basic online testing

    A focused, no-cost browser tool for basic regular-expression testing.

    Free plan Our Regex Playground verdict → + Compare Try Regex Playground
    5.8/10★★★☆☆

    Try Regex Playground

No tools match those filters.

Compare at a glance

#	Tool	Free plan	Paid from	Regex flavors	Pattern explanation	Code generation	Score
1	regex101	Yes		PCRE2 (PHP), JavaScript, Python, Golang, Java, .NET, Rust, POSIX ERE, POSIX BRE, PCRE (Legacy)	Yes	Yes	9.4
2	RegexStudio	Yes	Free	JavaScript, PCRE, Python, Java, Go, .NET, Rust, Ruby	Yes	Yes	9.2
3	RegexPilot	Yes	€19 one-time	JavaScript, TypeScript, Python, Java, C#, PHP, Ruby, Go, Perl, Rust, Scala, Kotlin, Groovy, Clojure, Elixir, R, Dart, Swift, MySQL, PostgreSQL, POSIX shell	Yes	Yes	9.0
4	RegexCraft	Yes	$49 one-time	.NET, PCRE2, JavaScript, TypeScript, PHP, Python, Java, Ruby, Go, Rust, Perl, Kotlin, Swift	Yes	Yes	8.8
5	DDebuggex	Yes		JavaScript, Python, PCRE	Yes	Yes	8.6
6	RegexBuddy	No		94 flavors, including PCRE, PCRE2, .NET, JavaScript, Java, Perl, PHP, Python, Ruby, Boost, RE2, ICU, and POSIX BRE/ERE	Yes	Yes	8.4
7	AppTools Regex Tester	Yes	Free	JavaScript, PCRE (PHP), Python, Go	Yes		8.2
8	RegexRegex	Yes	Free	JavaScript RegExp, Python re, PHP PCRE2, Java Pattern/Matcher, .NET Regex, Perl	Yes	Yes	8.1
9	RegExr	Yes	Free	JavaScript, PHP/PCRE	Yes		8.0
10	RTRegex Tester Pro	Yes		JavaScript, Python, Go, Java, PCRE, .NET	Yes	Yes	7.9
11	The Regex Coach	Yes	Free	Perl-compatible	Yes	No	7.7
12	RegexPlanet	Yes	Free	Your Browser, Bun, Deno, Erlang, Go, Haskell, Java, MySQL, .NET, Node.js, Perl, PHP, PostgreSQL, Python, Ruby, Rust, Swift, Tcl, XRegExp			7.6
13	RegEx Visualizer & Explainer	Yes	Free	JavaScript RegExp	Yes	No	7.5
14	RHRegex Hero	Yes	Free	.NET		Yes	7.4
15	RRegexAssistant		Free	Boost, Scintilla, POSIX, STD Regex, Perl, SED	Yes		7.3
16	Regex Shuttle	Yes	Free	JavaScript (native RegExp engine)	Yes		7.2
17	RegEx Tester	Yes	Free	.NET, Node.js, Python, Java			7.0
18	SK Play Labs Regex Tester	Yes	Free	JavaScript	Yes		6.5
19	txtnode Regex Tester	Yes	Free	JavaScript			6.4
20	RRegulex		Free	JavaScript/ECMAScript	No	No	6.2
21	RRegexo		Free	Java			6.1
22	RRetest		Free				5.9
23	RPRegex Playground	Yes	Free				5.8

Head-to-head All 28 comparisons →

• regex101 vs RegexStudio
• regex101 vs RegexPilot
• regex101 vs RegexCraft
• Dregex101 vs Debuggex
• regex101 vs RegexBuddy
• regex101 vs AppTools Regex Tester
• regex101 vs RegexRegex
• RegexStudio vs RegexPilot
• RegexStudio vs RegexCraft

How we rank regular expression testers

Every tool on this page was researched by iTechGuides Editors from its official website — pricing pages, plan tables and product documentation. We rank on how well each one does this category's core job, what the free or entry plan includes, and where it falls short. Where we have enough verified facts, the score out of 10 is a rubric — job fit, value and how much we could verify — shown with its breakdown on every tool's page; a tool we have not verified enough to score yet shows its rank without a number. Scores are re-checked when a product changes its plans. Read the full editorial policy, or submit a tool we missed.

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated 7 Oct 2026 · How we research and update