What are some alternatives?
When comparing grepWin and Copernic Desktop Search, you can also consider the following products
AstroGrep - AstroGrep is A Microsoft Windows GUI File Searching (grep) utility.
Agent Ransack - Agent Ransack is a tool for finding files and information on your hard drive fast and efficiently.
grep - grep is a command-line utility for searching plain-text data sets for lines matching a regular...
DocFetcher - DocFetcher is a portable German/English open source desktop search application.
PowerGREP - Quickly search through large numbers of files on your PC or network using powerful text patterns to find exactly the information you want. Search and replace with plain text or regular expressions to maintain web sites, source code, reports, ...
Everything - Everything. Locate files and folders by name instantly. Everything. Small installation file. Clean and simple user interface.