If you need a truly portable solution for regex searching/replacing across files, consider:
However, you can often run it in a "portable mode" manually. Here is a concise guide on how to achieve that. powergrep portable
When you run PowerGREP.exe /portable , the software does not read from or write to the Windows Registry. Instead, it saves all of its configuration—preferences, recent file lists, bookmarks, and saved actions—into a subfolder named Data located in the same directory as the executable. If you need a truly portable solution for
This paper examines PowerGREP Portable , a specialized deployment of the PowerGREP software it saves all of its configuration—preferences
Use the "Favorite Folders" feature inside PowerGREP. Save your most common project directories to the Favorites list. Since these are stored in the Data folder, they travel with you.