Popular online training portals include information aggregators such as Academic Earth and content providers such as Udacity and MIT Open Courseware. Online training portals offer courses in many different subject areas and are often associated with brick-and-mortar institutions. Online-only portals sometimes offer study towards industry-recognized degrees or credentials in association with traditional academic institutions.
Academic Earth provides aggregated lists of online courses. The Academic Earth staff sift through online course offerings from disparate providers and display the best for discerning would-be students. Featured providers include Harvard and Stanford universities.
Udacity offers a varied spectrum of online technical classes. The provider makes class materials available for self-study students, but for a fee students also have the opportunity to pursue real-world credentials in association with traditional universities and industry employers. Enrolled students also benefit from tutors, scheduled learning, mentoring and career services. Udacity's course offerings include those geared towards developing front end or full stack web developers. The site also offers courses for aspiring Android and iOS developers, tech entrepreneurs and data analysts.
MIT Opencourseware offers self-study resources for a wide variety of courses that parallel those offered to traditional MIT students. Specific courses include Structural Mechanics from the Aeronautics and Astronautics department and Out of Ground Zero: Catastrophe and Memory from the Global Studies and Languages department.