TextCrawler is described as 'fantastic tool for anyone who works with text files. This cool utility enables you to instantly find and replace words and phrases across multiple files and folders' and is an app in the Development category. There are three alternatives to TextCrawler for Windows and Mac. The best alternative is Funduc Search and Replace. It's not free, so if you're looking for a free alternative, you could try iXoft TexFinderX.
Search and Replace for Windows is a fast, easy to use grep utility for search and replace in multiple files, directories and archives. Supports grep style Regular Expressions. Script language for webmasters and programmers.