RegExr

RegExr.com is an online tool to learn, build, and test Regular Expressions. It was created by Grant Skinner and the nice people at gskinner.com.

• Webapps are not an alternative to local apps. Guest • Apr 2019 • 6 agrees and 1 disagrees Disagree   Agree
• Support only 2 engines while RegexBuddy 3.6 can simulate 15 flavors (Java, perl, python, ruby, tcl,...) Guest • Feb 2018 • 1 agrees and 1 disagrees Disagree   Agree
• easy to use, web-accessible, replace function, documentation, explanation function Guest • Nov 2017 Disagree   Agree

Free Open Source Web

regular expressions 101

Extensive regex tester and debugger with highlighting for PHP, PCRE, Python and JavaScript.

Free Web

Expresso

The award-winning Expresso editor is equally suitable as a teaching tool for the beginning user of regular expressions or as a full-featured development environment for...

Free Windows

Regex Hero

Online Silverlight regular expression tester with instantaneous highlighting, regex analysis, code completion, benchmarking, and C# and VB.NET code generation.

Free Windows Web

RegexMagic

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

Commercial Windows

The Regex Coach

The Regex Coach is a graphical application for Windows which can be used to experiment with (Perl-compatible) regular expressions interactively. It has the following...

• Discontinued
  As stated on the Regex Coach's website: “The program hasn't changed since 2008 and this page is also essentially still the same. But I can confirm that in September 2019 the program still works fine for me on Windows 10.”

Free Personal Windows

Patterns

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...

Commercial $ $ $ Mac

Regulex

Regulex is an 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...

Free Open Source Web Self-Hosted

Debuggex

Debuggex is an intuitive visual regular expression debugger, tester, and helper. NOTE: Login/registration relies on Persona which is now shut down.

Freemium Web

iHateRegex

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

Free Open Source Web Self-Hosted