The Internet Speculative Fiction Database (ISFDB) is a database of bibliographic information on genres considered speculative fiction, including science fiction and related genres such as fantasy, alternate history, and horror fiction. The ISFDB is a volunteer effort, with the database being open for moderated editing and user contributions, and a wiki that allows the database editors to coordinate with each other. As of AprilĀ 2022, the site had catalogued 2,002,324 story titles from 232,816 authors. More information...

According to PR-model, is ranked 1,448th in multilingual Wikipedia, in particular this website is ranked 1,179th in English Wikipedia.

The website is placed before and after in the BestRef global ranking of the most important sources of Wikipedia.

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