"Windows Grep" for Mac/OS X (Leopard)?

I recently switched to Leopard from Vista and having a hard time finding some applications.

Is there a "Windows Grep" alternative for Mac/OS X (Leopard)? Tried googling, but mac apps are really difficult to find.

Thanks

Update: TextWrangler seems to search inside text files, but:

it won't search .tpl files and its slooooow. Takes a minute or more for each search whereas windows grep searches almost instantly, never more than 10 secs.

Isn't there any windows grep alternative for mac?

Thanks

I'm not sure why you're having so much trouble finding something. Googling came up with the following in the first 15 results:

You can grep on a mac if you can use a command line:

http://guides.macrumors.com/grep
http://www.macobserver.com/tips/macosxcl101/2002/20021004.shtml

Or you can try some other options:
http://www.geditcom.com/grepArtee/grepDown.html
http://www.versiontracker.com/dyn/moreinfo/macosx/29720
http://grep.darwinports.com/

http://beta.devworld.apple.com/documentation/Darwin/Reference/ManPages/man1/zegrep.1.html
http://beta.devworld.apple.com/documentation/Darwin/Reference/ManPages/man1/fgrep.1.html#//apple_ref/doc/man/1/fgrep

Or you could use BBedit ... http://www.barebones.com/products/bbedit/featuressearch.shtml

Nah, I wan't a GUI-based.

Tried BBEdit, but it takes about a minute or more usually to search through the entire zen folder whereas windows grep took barely 10 sec or less. So I'll probably be looking for something else...

Installed Grep 1.1.6, but it won't open for me (on Leopard).

Oh, I might've not tried the correct set of keywords, lemme check the links..

Thanks!, DrByte :-)

UPDATE:

Tried several apps: Grep 1.1, BBEDIT (TextWrangler too), AquaGrep, grepAtree and Greppie.

...and Greppie seem to be the best.