A wiki is a collaborative Web site that allows anyone with a Web browser, often without restriction, to add, modify, or delete content that has been placed on the site. Contributors submit content or make changes using wiki software, which provides control over submissions; previous versions of pages are always available and may be restored at any time if added content does not meet the site's evaluation criteria.
The wikis listed in this guide focus specifically on information about the biomedical sciences. Many of these wikis are maintained by researchers and clinicians wanting to share information with each other and/or the general public or collaborate on a particular project.