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Instead of AppTools Regex Tester
AppTools Regex Tester alternatives
AppTools Regex Tester gives you a free browser workspace for trying patterns as you edit them. Matches and capture groups get separate visual treatment, its parser walks through tokens such as quantifiers and non-capturing groups, and a step-through debugger helps explain execution. It supports JavaScript, PCRE, Python, and Go flavors, plus global, case-insensitive, multiline, DotAll, and Unicode flags. The maker says test strings stay in the browser, and the suite requires no sign-up, subscription, or installation.
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RegexCraft
Free plan LinuxMacWindowsDesktop users comparing flavors and searching files — RegexCraft adds desktop file search, multi-flavor comparison, replacement previews, and code generation beyond AppTools’ browser tester.
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RegexPilot
Free plan ExtensionMacWebMac users who want visual and AI-assisted pattern building — RegexPilot adds a drag-and-drop visual builder, AI options, and 21 flavors routed to their real engines.
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Debuggex
Free plan Self-hostedWebUsers who want visual regex tests and shareable expressions — Debuggex adds visual and text views, unit tests, a regex repository, and links for sharing expressions.
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Regex Hero
Free plan WebWindows.NET developers seeking matching application behavior — Regex Hero focuses on .NET behavior and adds C# and VB.NET code generation, syntax highlighting, and completion.
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regex101
Free plan APILinuxSelf-hosted+1Developers needing broad flavor support and match exports — regex101 adds more regex flavors, flavor-specific explanations, exports, and developer integrations.
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RegExr
Free plan WebLearners who want tests and plain-English explanations — RegExr adds tests for matching and non-matching cases, saved expressions, community sharing, and learning resources.
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RegexRegex
Free plan WebJavaScript users wanting guided building and replacement previews — RegexRegex adds guided pattern controls, replacement previews, browser-saved test cases, and optional native runtimes.
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RegexPlanet
Free plan Web - 9
RegexAssistant
Free plan Windows - 10
Regex Shuttle
Free plan Web - 11
Regex Tester Pro
Free plan Extension - 12
RegEx Visualizer & Explainer
Free plan Web - 13
Retest
Free plan Linux - 14
The Regex Coach
Free plan LinuxWindows - 15
SK Play Labs Regex Tester
Free plan Web - 16
txtnode Regex Tester
Free plan Web - 17
RegexStudio
Free plan Web - 18
RegEx Tester
Free plan Web - 19
Regex Playground
Free plan Web - 20
RegexBuddy
Paid LinuxWindows5.7 Visit site - 21
Regexo
Paid LinuxMacWindows - 22
Regulex
Paid LinuxWeb
A different tool may fit better if you need more regex flavors, a specific language’s engine, a desktop workflow, code generation, or shared test suites. AppTools is free, so weigh paid plans and trials against the workflow gained, as well as platform availability. Also consider whether you want visual construction, replacement previews, multi-flavor comparisons, file search, or exports. Privacy choices vary too: some tools store local history, support share links, or offer customer-hosted processing, so check how those options fit your work.
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