Out of curiosity, would you all pay for a tool like this? If so, how much?
Based on features mentioned on each of their site,
Scrapebox for under $50 seems OK
but I was quite surprised with atomic's price! so no way.
I already do whois querying with open source command line utils (not to extract bulk emails), so atomic is not worth to me. It is really not difficult to maintain your own whois db and query it from any OS. To get started on Windows, use
whois, redirect the output to file and grep whenever you want. Grep and more linux utils for Windows are included in
babun. If you haven't used grep before, don't get scared(
@Nick V, I don't mean you, this is for lot of non-techie users who find commandline tools intimidating

), the basic is really easy. Wont take more than few minutes to get going. Linux already has all the software you need, so no need to download. SEO stuff is more difficult from commandline, so Scrapebox may be worth it but I don't know much about SEO tools. All the software I have listed here is free or open source but please make sure to check them with your antivirus before using them. You can also upload the files to
VirusTotal.com for a free multi antivirus check.