Corexcel, formerly known as Inservice Training Institute, is an American provider of continuing education that was founded in 1984. The name was changed to Corexcel in 1998. Corexcel distributes profile assessments and training materials for organizations to evaluate their employees and present training sessions using their own in-house trainers. Corexcel also offers online courses for individuals and/or organizations to improve management, selling or basic interpersonal skills.