Does anyone know of a good rank tracking service like Raven SEO Tools, Authority Labs etc? Could you please suggest some similar ones please?

I am not looking for downloadable softwares like IBP, which run from a desktop. I have tried such and the IP gets banned after a few attempts ( I need to track 100's of keywords on a daily basis, and checking them manually is a big big pain).

Also, if I were to develop a rank checker inhouse, could anyone please suggest someone who could take this up as a project?

Awaiting comments.

Regards,

Kaustubh