The following are directories of consultants on the Internet. These can also be useful for marketing your own consulting services:
Guru.com
This directory of “gurus†has lists of gigs and gurus. Many job postings specify whether the work is to be done on-site or off-site.
Consultant Directory
This is an extensive directory of consultants listed by category with keyword search functions. There is no listing of job postings.
Freelancers Network
Another large database, this consultant directory also has listings of thousands of consultants worldwide along with extensive search capability. You can also search and post specific projects.