From HexMonkey Software:
MassReplaceIt is a utility that performs a find and replace on the contents or filenames of multiple files at once. A search is simple to set up, yet provides powerful features such as a mask and saveable queries. Additionally, there are a number of options to control a search, such as case sensitive and whole words options and a choice of searching entire files or just the beginning or end.
What's new in this version:
View details about proposed changes to files
Save the results list to a text file
View file information from within the application
Additionally, there are several bug fixes and other improvements