A number of traditional publications are putting up web-versions of their journals. However, each company handles the web version differently. Some put up full-text. Some allow full-text access only to subscribers.
Some publishers just have order information and tables of contents on their web pages.
In addition to the journal publishers, many database companies have started to provide the full-text access to a limited number of journals. Similarly to the journal publishers, the database companies have different levels of access to full-text. These definitions are not yet standardized. Full-text journals may be provided by a database company or a journal publisher. An example of an on-line journal is Lancet.