grepWin - grepWin is a simple search and replace tool which can use PCRE regular expressions to search for...

AnyMailFinder.com - Find anyone's email address

DocFetcher - DocFetcher is a portable German/English open source desktop search application.

Atomic Email Hunter - Atomic Email Hunter is an incredibly robust tool that specializes in extracting email addresses, along with usernames, from various webpages.

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, ...

Scrape - Gather all website emails in seconds