Amazon Mechanical Turk - The online market place for work.
JobSpider - JobSpider is a platform where you can post resumes and jobs.
Universal Data Tool - Machine learning, data labeling tool, computer vision, annotate-images, classification, dataset
Jobvertise - Free online jobs database, easily post jobs and search resumes.
Labelbox - Build computer vision products for the real world
Zillionresumes - The powerful, affordable candidate search and resume database solution.