grepWin is a text search and replace tool that lets you search for a specific string in your files and replaces it with another. You can search for a regular text match or use advanced RegEx syntax to search for complex text patterns that are similar but not identical. The search can be limited by file name and size, and also choose to scan entire folders with optional sub-folders.

The program includes a RegEx tester that allows you to preview the results of your RegEx matches, as well as a content preview that displays the found text matches within the context of your files. Other features include and automatic backup option and custom presets to save frequently used search patterns.