This is a list of as many vendors of e-learning software from the Industry. It is not possible to have a comprehensive and completely up-to-date list. Companies go in and out of business and are purchased by other companies. Re-branding is a regular occurrence. Many corporations and universities have built their own proprietary systems and have made them available only in a limited way if at all. The focus is on those available in English and for which information is available on the World Wide Web.