Related Domains Finder / Scraper

I did a recent search on the forum and big G for a "related domains finder" and haven't come up with any software that is current. The closest thing I came across was from the Cash Keywords Pro folks but it looks like they no longer support the software.

I'm looking for additional URLs after I find relevant keyword urls for my campaigns.

Is there anything out there with a one-time cost without a monthly subscription?

you could try this free services: bustaname.com and namestation.com I often use them to find good domains..