Note: This is not an official portable release from Just Great Software. Use at your own risk.
https://www.powergrep.com/download.html (Always verify the SSL certificate and look for "https"). powergrep portable link
PowerGREP is a powerful Windows utility for searching, extracting, and replacing text across many files at once using regular expressions. A "portable" version of PowerGREP refers to a copy that runs without installation — useful for users who need to carry the tool on a USB drive, use it on machines where they lack install privileges, or maintain a clean system without additional software installed. Note: This is not an official portable release
All settings, undo history, and library files are saved directly to the portable device. PowerGREP is a powerful Windows utility for searching,
PowerGREP will then clone itself, along with all your settings and history, onto the device. Alternatively, administrators can automate this via the command line using the Pro-Level Capabilities in Your Pocket