SaaS: DocuSign

DocuSign is an SaaS based e-signature transaction management service that was founded in 2003.  Based out of San Francisco, DocuSign has over 500,000 customers as well as hundreds of millions of users worldwide.  It allows people to send, sign, and manage legally binding documents.  DocuSign offers limited access to users as a “loss leader” in order to spark interest, then provides full access to all features upon subscribing.  It does not make money by charging the users who sign the documents, but rather the correlative entities that initiate the contracts.