Psychology ToolsThis free open-source site, founded in 2008, maintains a library of evidence-based tools and psychological self-help resources for psychologists, counselors, therapists, social workers, and students developing clinical skills. Users can download copyright-free books, articles, scales and measures, and educational worksheets available in several digital formats. Students can gain knowledge about therapies and techniques for several psychological conditions, including depression, grief and loss, obsessive-compulsive disorders, and post-traumatic stress.