Regex Lab .NET is described as 'full-featured application for editing regular expressions. The application features a modern, highly functional UI allowing increased productivity when writing or debugging regular expression patterns'. There are more than 25 alternatives to Regex Lab .NET for a variety of platforms, including Windows, Online / Web-based, Linux, Mac and Self-Hosted solutions. The best alternative is RegExr, which is both free and Open Source. Other great apps like Regex Lab .NET are regular expressions 101 (Free), Expresso (Free), RegexBuddy (Paid) and PowerGREP (Paid).
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 the experienced programmer or web designer with an extensive knowledge of regular expressions.
Quickly search through large numbers of files on your PC or network using powerful text patterns to find exactly the information you want. Search and replace with plain text or regular expressions to maintain web sites, source code, reports, ...