Bulk Domain Availability Checking?

I'm looknig for a way to check the bulk availability of about 3,500 domains, I'm also looking for a way to test out the keywords involved in them in bulk to see if these are worth taking in terms of competition etc. Scrapebox's bulk domain checker is, frankly, bs, and did not work at all when I tried to use it. Any other suggestions into bulk domain checking and bulk domain research?

You might want to try this for the availability checks:

http://www.domainpunch.com/products/dnapro/

For the competition and keyword research, there's a number of them but Market Samurai is pretty good.

Are there any free ways of doing this? Or am I just looking for too much of a free lunch from that. I really expected SBs ones to work, but every other domain it said was unavailable was infact available

just use the multiple checker at:
namedotcom