Regular Expression Laboratory

Regular Expression Laboratory is an application that facilitates a user-friendly interface and options to help you learn how to correctly create and apply regular expressions when performing intricate search operations. It's free to use.

Clear-cut installer and interface

It gets unpacked quickly and effortlessly, thanks to the fact that there are no special options, mandatory software products, or third-party components involved.
The main app window has a neatly organized layout and simple design, where you can consult a help manual to find out details about the regex syntax, usage and several examples.

Load sample text to set search and replace patterns

Sample text can be loaded from HTML, C++, Pascal, Perl and CSV files, along with plain text documents and scripts. When it comes to the search and replace patterns, you can use tab characters, new line, whitespace, non-whitespace, alphabetic, non-alphabetic, digit and non-digit operators.
Others include uppercase, lowercase, case sensitivity, start or end of file or word, character in set or not in set, or, group, expression, HTML tags, text paragraphs, and so on.
Stored expressions can be highlighted in the main window. Plus, you can edit multiple lines when it come to font settings, blank formalization, and other aspects. Meanwhile, results can be made the new sample text.

Evaluation and conclusion

It worked smoothly in our tests, without triggering the operating system to hang, crash or indicate errors. It used a low amount of CPU and RAM, so it didn't hamper the computer's performance. Tasks were carried out rapidly.
To sum it up, Regular Expression Laboratory provides you with practical options to give you a better idea about the syntax and usage of regular expressions when searching and replacing keywords or files using various software products. It's free for non-commercial use.