What are some alternatives?
When comparing Rummage and grep, you can also consider the following products
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, ...
grepWin - grepWin is a simple search and replace tool which can use PCRE regular expressions to search for...
Extract Emails - Extract Email makes it so easy to create email mailing lists, catalogue contact information, and enjoy cross-platform accessibility.
Cute Web Email Extractor - It is fast, secure and trusted web email extractor, email scraper, email grabber, and email spider for extracting email addresses from search engines, websites, local files.
AstroGrep - AstroGrep is A Microsoft Windows GUI File Searching (grep) utility.
Web Contact Scraper - Web Contact Scraper is a fully automated software application for gathering targeted business contact information. You can search and gather thousands of business details matching a chosen profession within any location worldwide!