regular expressions 101 - Extensive regex tester and debugger with highlighting for PHP, PCRE, Python and JavaScript.
SMF – Search my Files - SMF - Search my Files v13 is the fastest duplicate files finder and a multi-dimensional - file searcher, - file copier / mover, - file deleter / eraser, - and
.NET Regular Expression Designer - Learn, develop and test Regular Expressions for the .NET platform.
SearchMyFiles - Alternative to the standard Search For Files And Folders module of Windows. Duplicates search is also supported.
RegexMagic - Use RegexMagic to generate complete regular expressions to your specifications by using RegexMagic's flexible patterns, instead of the cryptic regex syntax.
Advanced Recent Access - Advanced Recent Access is designed to see more properties of your recent used resources (files and directories). Key features: can see more properties of the recent resources, such as path, size, type, date modified and date created. And more.