Indeed

Indeed calls itself “a search engine for jobs.” It collects job listings from many job boards, newspapers, company career pages, and other sites. At the time of this writing, it listed more than 1 million jobs posted in the last seven days.

Simply Hired

Another job board search engine. You can browse by state, job title, company name, or industry. Post your resume to as many as five major job boards at no cost. Conduct special searches by these unique categories: dog-friendly employers, mom-friendly companies, employers for the 50+, and eco-friendly employers.

Vault

You can search jobs here, but it also has one of the best libraries of career guides and employer profiles. Additionally, information on more than 3,000 companies is listed and the site's message boards offer enormous insight as to what it might be like to work at one of your target employers.