Regulex is described as 'Open-source, regular expression parser and visualizer. It's available online, can be embedded in other websites, or the code can be self-hosted as a JavaScript tool' and is an app. There are more than 25 alternatives to Regulex for a variety of platforms, including Windows, Web-based, Mac, Linux and iPhone apps. The best Regulex alternative is RegExr, which is both free and Open Source. Other great apps like Regulex are regular expressions 101, Expresso, RegexMate and Wildcard.
jRegExAnalyser is an interactive tool written in Java to write, test, debug, analyse and profile regular expressions. Its free and Open Source software, licensed under the terms of GPLv2 with Class Path Exception.
This software will let you design your regexps by letting you type the expression and visualize its effect on a sample of your choice.
Reggy is a small OS X cocoa/objective-c application to very quickly visualize what a given regular expression will match given a test string. It will also tell you if you have errors in your regular expression.
Multi String Replacer is a small and portable application that can be used to replace multiple strings at once. Its main functionality is String Swapping in which can be easily and quickly done. String swapping consists on replacing WordX with WordY and WordY with WordX.
Search multiple strings occurrences simultaneously with the help of this piece of software that comes with support for regular expressions.
RegEx Lab allows you to test regular expressions. The app highlights and underlines text to show matches and capture groups. There's also a handy cheatsheet and a results list view. It has a replace feature too.
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Having trouble getting your regular expressions just right? Not sure what they match and what they leave out? Tired of having to write test programs every time? RegExhibit can help.
Visual regex builder for Mac featuring drag-and-drop blocks, AI that generates patterns from English, explanations for each regex part, 21 real regex engines, instant engine switching, real-time match testing, sample library, VS Code integration, export, and offline AI support.
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Pyrexp is a regex testing tool that allows to validate regex patterns, test regular expressions against strings, and also includes a regex visualizer that provides graphical visualization of regex patterns.
Regexp testing tool allows to apply group of regexps to huge arrays of data (millions or so) in order to investigate search or search/replacement possibilities of regexp group.
Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, Go, JavaScript, Java.
