httpwebwitch - 10:42 pm on Mar 21, 2009 (gmt 0)

Allaire HomeSite had a very powerful S&R feature, letting you do multiline replacements with Regular Expressions. It also let you preview the "find" before committing to the "replace". I have not found another tool that does a better job.

Visual Studio has a good "find in files" and "replace in files", though I find its interface a little annoying.

Notepad++ is excellent, I love it, but watch out because it's a bit unstable and may crash half way through a S&R. If it does, it could leave your files all fubar.

OF COURSE
no one should ever be doing massive S&R functions on many many files! Use SSI - (Server Side Inclusion) instead! Keep your code modular! use require() and include() for anything that's going to be used more than once, and functions for everything else.