1)   RegexBuddy 3.1.1
Perfect companion for working with regular expressions. Easily create and clearly understand regex patterns. Test any regex on sample strings and files. Use the regex with automatic source code snippets. Collect regex libraries for future use.

 2)   EasyPattern Helper 2.8
Design perl patterns using point and click! Just highlight the variable text and the text to capture, and EPHelper does the rest! EasyPatterns are a cool new way to describe text patterns. They're English-like, powerful and easy to understand.

 3)   Eluent Tools 1.8
Eluent Tools is a collection of utilities that includes Eluent Replace, a GUI-based, interactive, multi-file search and replace tool that uses Perl regular expressions and scripting, Eluent Find, a file contents searcher and viewer, and much more.