Patterns is a simple yet powerful tool for working with regular expressions. Build great patterns quickly and effortlessly with syntax coloring and with matching and replacing occurring in real time.
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Regex Lab .NET has been discontinued. Similar apps include RegExr, which is free and open source. Other options are regular expressions 101, Expresso, RegexBuddy and PowerGREP. You're spoiled for choice with Regular Expression Editors like Regex Lab .NET: we list more than 25 alternatives for Windows, the web, Mac, Linux and self-hosting.
Patterns is a simple yet powerful tool for working with regular expressions. Build great patterns quickly and effortlessly with syntax coloring and with matching and replacing occurring in real time.

RegViz is a tool for debugging JavaScript regular expressions in a visual way. Advanced highlighting helps you to understand the structure and purpose of a regular expression and to detect bugs therein.

Learn, develop and test Regular Expressions for the .NET platform. The .NET Regular Expression Designer is a free download for Windows that helps you learn, develop and test regular expressions.

What RegExpEditor is can be said easyest by telling what it is not: It is not an editor for regular expressions. Although it can be used for this purpose. Instead RegExpEditor is a text editor that allows you to alter text using regular expressions.


Use RegexMagic to generate complete regular expressions to your specifications by using RegexMagics flexible patterns, instead of the cryptic regex syntax.

iHateRegex offers an easy way for developers to find helpful and reusable regular expressions while also providing an intuitive playground to interact with regex snippets to create or just learn.


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.




EasyGrep is an easy to use Windows grep software which allows you to search within files on your computer. Supports text based searches as well as regex searches. Supports Notepad++.
