Is there any Comb Filters out there?

Is there any Comb Filter's out there?

as in software wise, for example this is the only one i could find:

http://home.earthlink.net/~tacosalad.../dotcrawl.html

i was trying it, but it doesnt really work to my eye.

i was hoping there could have been a better one out there, as i have been looking up and down for one in ages.

i cannot either aford to get one hardware wise, just something simple for now.

i would really appreciate it if someone can help me on this.

thanks very much.

anyone?

please???

please? anyone?