The Internet Encyclopedia of Philosophy (IEP) is a free online encyclopedia on philosophical topics and philosophers founded by James Fieser in 1995. An internet encyclopedia project is a large database of useful information accessible via World Wide Web Philosophy is the study of general problems concerning matters such as existence knowledge truth beauty justice validity mind and language The current general editors are James Fieser and Bradley Dowden. The staff also includes numerous area editors as well as volunteers. While of high quality, the encyclopedia is in general more accessible and introductory than the Stanford Encyclopedia of Philosophy. The Stanford Encyclopedia of Philosophy (SEP is a freely-accessible Online encyclopedia of Philosophy maintained by Stanford University.
The IEP is a non-profit organization that receives no funding.  The mission statement of the IEP is as follows:
The Internet Encyclopedia of Philosophy was founded in 1995 for the purpose of providing detailed, scholarly information on key topics and philosophers in all areas of philosophy. The IEP is free of charge and available to all internet users world wide. The present staff of 25 editors and approximately 200 authors hold doctorate degrees and are professors at colleges and universities around the world, most notably from the United States, Great Britain, and Australia. The submission and review process of articles is the same as that with printed philosophy journals, books and reference works. The authors are specialists in the areas in which they write, and are frequently leading authorities. 
In short, the IEP is an encyclopedia that attempts to provide a wide readership with free philosophical articles that remain of high academic quality.
According to the IEP, the quality of its articles is "at the same level as that of the best multi-volume encyclopedias of philosophy which appear in print. " This is achieved primarily by recruiting well-qualified contributors and using a peer review process that is "rigorous and meets high academic standards".  The encyclopedia uses a traditional, closed procedure for commissioning and refereeing its permanent articles (comparable to that of the Stanford Encyclopedia of Philosophy: see peer review), but sometimes uses material from public domain resources to create temporary stop-gap articles until permanent articles are completed. Peer review (also known as refereeing) is the process of subjecting an author's scholarly work research or Ideas to the scrutiny of others who are