Anytxt Desktop Search - Anytxt is Desktop Search Tool with A Powerful Full-Text Search Engine.

grep - grep is a command-line utility for searching plain-text data sets for lines matching a regular...

TextSeek - TextSeek helps you search document contents for Windows and MacOS within seconds, including PDF, Word, Excel, PowerPoint, and other formats.

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 by Voidtools - Everything. Locate files and folders by name instantly. Everything. Small installation file. Clean and simple user interface.

dnGREP - dnGrep allows you to search across files with easy-to-read results.