# Regular Expressions application?

**URL:** <https://forum.xojo.com/t/regular-expressions-application/87567>\
**Category:** Getting Started\
**Created:** [January 26, 2026, 3:58pm UTC](https://forum.xojo.com/t/regular-expressions-application/87567 "2026-01-26T15:58:25Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![John\_Fatte](https://forum.xojo.com/letter_avatar_proxy/v4/letter/j/4bbf92/32.png) [@John\_Fatte](https://forum.xojo.com/u/John_Fatte)\
**Post date:** [January 26, 2026, 3:58pm UTC](https://forum.xojo.com/t/regular-expressions-application/87567/1 "2026-01-26T15:58:25Z")

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I have an old Realbasic (dare I say textbook) that I was looking in regarding regular expressions. In the section on regular expressions, they stated that there was an application that you can use to test your regular expressions and it was available to download from the RealSoftware website. Anyone know if this application is still around?

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**Author:** ![PaulS](https://forum.xojo.com/user_avatar/forum.xojo.com/pauls/32/199_2.png) [@PaulS](https://forum.xojo.com/u/PaulS)\
**Post date:** [January 26, 2026, 4:04pm UTC](https://forum.xojo.com/t/regular-expressions-application/87567/2 "2026-01-26T16:04:42Z")

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That’s probably [RegExRX 1.9.2 (shareware)](https://www.mactechnologies.com/index.php?page=downloads#regexrx) by @Kem_Tekinay

Kem is the regex guru. 😉

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**Author:** ![Eric\_Williams](https://forum.xojo.com/letter_avatar_proxy/v4/letter/e/ecccb3/32.png) [@Eric\_Williams](https://forum.xojo.com/u/Eric_Williams)\
**Post date:** [January 26, 2026, 4:34pm UTC](https://forum.xojo.com/t/regular-expressions-application/87567/3 "2026-01-26T16:34:00Z")

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> **[regex101: build, test, and debug regex](https://regex101.com)**
>
> Regular expression tester with syntax highlighting, explanation, cheat sheet for PHP/PCRE, Python, GO, JavaScript, Java, C#/.NET, Rust.

…is also excellent, although you’ll need to do a bit of options translation from their syntax to Xojo.

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**Author:** ![Tim\_Parnell](https://forum.xojo.com/user_avatar/forum.xojo.com/tim_parnell/32/161_2.png) [@Tim\_Parnell](https://forum.xojo.com/u/Tim_Parnell)\
**Post date:** [January 26, 2026, 4:40pm UTC](https://forum.xojo.com/t/regular-expressions-application/87567/4 "2026-01-26T16:40:31Z")

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… which is the benefit of RegExRx.  
It’s intended for use with Xojo and has been built to make Xojo dev lives easier.

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**Author:** ![Kem\_Tekinay](https://forum.xojo.com/user_avatar/forum.xojo.com/kem_tekinay/32/154_2.png) [@Kem\_Tekinay](https://forum.xojo.com/u/Kem_Tekinay)\
**Post date:** [January 26, 2026, 6:39pm UTC](https://forum.xojo.com/t/regular-expressions-application/87567/5 "2026-01-26T18:39:27Z")

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If you’re interested in RegExRX, you can get the Windows version or the latest Mac version from my web site:

> **[MacTechnologies Consulting (914) 500-8878](http://www.mactechnologies.com/index.php?page=downloads#regexrx)**
>
> A complete regular expression development tool meant for novices and professionals alike, this editor has many features designed to help in the development and storage of regular expressions. Based on the PCRE library, RegExRX will allow a user to...

If Mac, buy it from the Mac App Store, put that Intel-only version in a folder somewhere, then download the ARM-compatible version from the web site. The MAS version will work as your license.

(I’ll eventually update the MAS.)

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**Author:** ![Greg\_O](https://forum.xojo.com/user_avatar/forum.xojo.com/greg_o/32/22785_2.png) [@Greg\_O](https://forum.xojo.com/u/Greg_O)\
**Post date:** [January 26, 2026, 8:12pm UTC](https://forum.xojo.com/t/regular-expressions-application/87567/6 "2026-01-26T20:12:11Z")

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@Kem_Tekinay - the signature on the ARM version is as-hoc and there’s no notarization.