Utility that indexes files on desktop PC and displays results in a Google search page, with some relevance ranking based on modified dates. [Windows] http://desktop.google.com/
Unix-based search software for gathering, indexing and searching a set of files. WebGlimpse works on Web sites. Free for most nonprofits. http://webglimpse.org/
Indexes files on desktop machine and allows searching via software interface. Results not ranked by relevance, but it uses reductive queries that means the list of results narrows as you add additional keywords. [Windows] http://desktop.yahoo.com/
Indexes contents of a desktop machine and allows searching via a search box built into the taskbar. Results displayed in a window sorted by relevance. [Windows] http://desktop.msn.com/
Shareware utility for search and replace in multiple files, directories and zip archives. Supports egrep style regular expressions. Script language for webmasters and programmers. From Funduc Software. http://www.funduc.com/search_replace.htm
WinGREP, real time search/replace, find unlimited files across multiple directories. Extended IDE configuration, history management, enhanced file mask management. Results pane displays results in context. Provides, company information, FAQs and download http://www.hurricanesoft.com/
Structured grep is a tool for searching and indexing text, SGML, XML and HTML files and filtering text streams using structural criteria. Win32 binary and binaries for HP-UX, Linux, OSF1 and Solaris. http://www.cs.helsinki.fi/~jjaakkol/sgrep.html