From the SEP website - "From its inception, the Stanforf Encyclopedia of Philosophy (SEP) was designed so that each entry is maintained and kept up to date by an expert or group of experts in the field. All entries and substantive updates are refereed by the members of a distinguished Editorial Board before they are made public. Consequently, our dynamic reference work maintains academic standards while evolving and adapting in response to new research."
More about this project -
"Most of the other encyclopedia projects available on the web lack some of the dynamic and scholarly features of the SEP. Either they (1) are costly and behind a subscription wall, invisible to search engines and so not as useful to academics and the general public; or (2) don't have an administrative system capable of screening new entries and updates prior to publication and ensuring that entries are responsive to new research, or (3) don't allow the authors/editors to directly contact the server to update/referee the content of the entries; or (4) lack a system of archives for stable, scholarly citation (thus, when entries change, the old content is just lost, and any citations to, or quotations from, prior content become impossible to verify), or (5) lack a university-based Advisory Board to vet the members of its Editorial Board.
The SEP's model may therefore represent a unique digital library concept: a scholarly dynamic reference work. A scholarly dynamic reference work differs from an academic journal, for academic journals (1) do not typically update the articles they publish, (2) do not aim to publish articles on a comprehensive set of topics, but rather, for the most part, publish articles that are randomly submitted by the members of the profession, (3) do not aim to cross-reference and create links among the concepts used in the articles they publish, (4) typically serve a narrow audience of specialists, and (5) do not have to deal with the asynchronous activity of updating, refereeing, and tracking separate deadlines for entries, since they are published on a synchronized schedule. Moreover, our reference work differs from a preprint exchanges, for the latter not only exhibit features (1), (2), (3), and (4) just mentioned, but also do not referee their publications and so need not incorporate a work-flow system that handles the asynchronous refereeing process that occurs between upload and publication in a dynamic reference work. None of this is to say that electronic journals and preprint exchanges have a faulty design, but rather that a scholarly dynamic reference work is a distinctive new kind of publication that represents a unique digital library concept."
A comprehensive sociology research database with coverage of not only sociology, but also anthropology, criminal justice, economic development, ethnic and racial studies, gender studies, social psychology, social work, substance abuse and other areas. It provides indexing for more than 600 journals with full text available for more than 300 journals.