RegExr is the most popular Web-based alternative to ReX.js.
RegExr is the most popular Open Source & free alternative to ReX.js.
- RegExr is Free and Open Source
ReX.js Alternatives
ReX.js is described as 'Create regexps with clean, readable, functional & chainable syntax with help of in-editor autocompletion from TypeScript! Built better regexps faster!' and is an app in the development category. There are four alternatives to ReX.js for Web-based, Self-Hosted, Google Chrome, Flathub and Linux. The best ReX.js alternative is RegExr, which is both free and Open Source. Other great apps like ReX.js are Wildcard, iHateRegex and Regex101 Chrome Extension.
Alternatives list
Cost / License
- Free
- Open Source
Platforms
- Linux
- Flathub


Wildcard is the most popular Linux alternative to ReX.js.
- Wildcard is Free and Open Source
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.
Cost / License
- Free
- Open Source
Platforms
- Online
- Self-Hosted


iHateRegex is the most popular Self-Hosted alternative to ReX.js.
- iHateRegex is Free and Open Source
Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, Go, JavaScript, Java.
Cost / License
- Free
- Proprietary
Platforms
- Google Chrome










