Regex101 is a powerful, online regular expression tool with extensive support for multiple languages including PHP, PCRE, Python and JavaScript.
Cost / License
- Free
- Proprietary
Platforms
- Online

Multi String Replacer is described as 'Small and portable application that can be used to replace multiple strings at once. Its main functionality is String Swapping in which can be easily and quickly done. String swapping consists on replacing WordX with WordY and WordY with WordX' and is an app. There are more than 50 alternatives to Multi String Replacer for a variety of platforms, including Windows, Web-based, Mac, Linux and Self-Hosted apps. The best Multi String Replacer alternative is regular expressions 101, which is free. Other great apps like Multi String Replacer are RegExr, dnGREP, Expresso and Find and Replace (FNR).
Regex101 is a powerful, online regular expression tool with extensive support for multiple languages including PHP, PCRE, Python and JavaScript.

dnGrep allows you to search across files with easy-to-read results. Search through text files, Word documents, PDFs, and archives using text, regular expression, XPath, and phonetic queries. dnGrep includes search-and-replace, whole-file preview, right-click search in File...




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.


Find and Replace (FNR) is an open source tool to find and replace text in multiple files.

RegexMate offers seamless regex crafting and testing on macOS and iOS. Its minimalist interface provides an instant live preview, and users can save their expressions into a library for quick reference. A comprehensive guide with tutorials is always accessible, with light and dark mode options.






FAR is a simple tool for search and replace operations over multiple files. You can apply ordinary "word by word" replacement, or choose to use fully featured regular expressions.



RegexBuddy is your perfect companion for working with regular expressions. Learning, creating, understanding, testing, using and saving regular expressions has never been easier.



PowerGREP is a powerful Windows grep tool. Quickly search through large numbers of files on your PC or network, including text and binary files, compressed archives, MS Word documents, Excel spreadsheets, PDF files, OpenOffice files, etc.


Search files with smart queries as with Google, replace simple or multiline text in multiple files. The batch replace operation easily updates hundreds of different links in several files. Extremely fast, easy to use, with excellent help.




The only one Regular Expression tester you need, that will help you to test your regular expressions in flavors:

