What are some alternatives?
When comparing wingrep.com Windows Grep and Agent Ransack, you can also consider the following products
grepWin - grepWin is a simple search and replace tool which can use PCRE regular expressions to search for...
Everything - Everything. Locate files and folders by name instantly. Everything. Small installation file. Clean and simple user interface.
AstroGrep - AstroGrep is A Microsoft Windows GUI File Searching (grep) utility.
DocFetcher - DocFetcher is a portable German/English open source desktop search application.
BareGrep - A free file finding and text searching tool: * Regular expression text search
Locate32 - Locate32 is software which can be used to find files from your harddrives and other locations.