Rummage is a grep-style search tool which allows you to search through multiple locations for multiple strings or Regular Expressions simultaneously. It has the following features:

• Search for multiple strings or Regular Expressions simultaneously
• Search multiple locations simultaneously
• Powerful inclusion and exclusion filters for files and folders so you only search the places you need to
• History feature automatically remembers the things you've searched for and the places you've searched
• Right-clicking on matching files brings up the standard Windows context menu
• Save and load Search Requests (speeds up searching large folders)
• Also includes command-line version (rmg.exe)