Regexo

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What Regexo is

Regexo is a desktop application for developers who need to create, test, and reuse regular expressions. It uses the Java Regular Expression language, which the project wiki describes as compatible with almost all regular-expression types. Regexo highlights matches on screen and can replace text matched by an expression. Expressions can be saved, reopened, and modified; their records are kept in a file database. Its documented interface includes workspace, toolbar, open, save, manage, and about screens.

Regexo is built with Java Swing and runs on operating systems with the Java 6 runtime environment. The project lists Windows, Linux, and macOS among the systems on which it was tested. It is free, and the SourceForge listing gives GNU General Public License with Classpath exception and Public Domain under License. The project is marked Beta. Its files page lists a 1.6 MB download called Regexo New Version, last modified April 12, 2013. SourceForge also has a Support section. The project listing identifies Java as its programming language and JDBC as its database environment.

Who it suits

Regexo suits developers who want a desktop workspace to write, check, replace, and keep Java regular expressions. It is a fit for people working on Windows, Linux, or macOS who can run Java 6.

What it does well

Highlights matching results on screen.
Can replace text matched by an expression.
Saves, reloads, and modifies expressions in a file database.
Free to use.
Tested on Windows, Linux, and macOS.

What to know first

Requires a Java 6 runtime environment.
The SourceForge project is marked Beta.

Getting started

Open the Regexo project wiki on SourceForge.
Use a system with Java 6 runtime environment.
Get the Regexo New Version download from the SourceForge files page.
Launch the Java Swing application and use its workspace to work with expressions.

Verdict

Choose Regexo if you want a free desktop tool for checking Java regular expressions, replacing matches, and keeping saved patterns. Its Java 6 requirement and Beta project status may make it less suitable for those seeking a more established or runtime-independent tool.

Questions

Is Regexo free?

Yes. Its pricing model is free.

Which platforms does Regexo support?

It is a desktop application tested on Windows, Linux, and macOS.

What regular-expression flavor does it use?

Regexo uses the Java Regular Expression language.

Can it save patterns?

Yes. Users can save, load, and modify expressions, with records stored in a file database.

What license does the project list?

SourceForge lists GNU General Public License with Classpath exception and Public Domain under License.

Facts from Regexo's own pages

Download: SourceForge lists a 1.6 MB download named Regexo New Version, dated 2013-04-12. · sourceforge.net, 9 Oct 2026
Integrations: The project listing identifies Java as the programming language and JDBC as the database environment. · sourceforge.net, 9 Oct 2026
Intended audience: The project listing identifies developers as its intended audience. · sourceforge.net, 9 Oct 2026
Interface: The wiki shows About, Workspace, Toolbar, Open, Save, and Manage screens. · sourceforge.net, 9 Oct 2026
Java requirement: The wiki says it can run on any operating system with Java 6 runtime environment. · sourceforge.net, 8 Oct 2026
License: SourceForge lists GNU General Public License with Classpath exception and Public Domain as project licenses. · sourceforge.net, 9 Oct 2026
Match highlighting: Matched results are highlighted on screen. · sourceforge.net, 9 Oct 2026
Project status: The SourceForge project is marked Beta. · sourceforge.net, 8 Oct 2026
Purpose: Regexo is a desktop application for developing and testing regular expressions. · sourceforge.net, 9 Oct 2026
Regex engine: It uses the Java Regular Expression language and says it supports almost all regular expression types. · sourceforge.net, 9 Oct 2026
Replacement: Users can replace text patterns matched by an entered regular expression. · sourceforge.net, 9 Oct 2026
Runtime: The application can run on an operating system with the Java 6 runtime environment. · sourceforge.net, 9 Oct 2026
Save and load: Users can save, load, and modify regular expressions, with records stored in a file database. · sourceforge.net, 8 Oct 2026
Saved expressions: Users can save, load, and modify regular expressions, with data stored in a file database. · sourceforge.net, 9 Oct 2026
Status: The SourceForge project is marked Beta. · sourceforge.net, 9 Oct 2026
Support: The project listing provides a Support section. · sourceforge.net, 9 Oct 2026
Technology: Regexo is developed as a Java Swing application. · sourceforge.net, 8 Oct 2026
Tested systems: The maker says Regexo was tested on Windows, Linux, and Mac operating systems. · sourceforge.net, 9 Oct 2026

Where Regexo stands on Freedom251

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