Students may want to register with more than one search organization, since none will have a database containing all available scholarships (keeping in mind that there can be a lot of work attached to each application).

Search Organization listing 40 companies which perform scholarship-search services:

College Scholarships, Colleges, and Online Degrees

A SAMPLING OF SEARCH ORGANIZATIONS – over two million scholarships.
Scholarship Monkey – one million scholarships – includes a list of actual scholarships