Contains character profiles, manga summaries and translations, anime information, soundtrack information, image gallery, doujinshi, and a listing of various other merchandise.

Story summary, author information, synopsis and screencaps from each television episode, and links to other related websites.

Character descriptions, screencaps from the episodes, and information on where to get the manga, OAVs, and TV series.

Character biographies, seiyuu profiles, and mailing list.

Contains episode transcripts, fan fiction, character guide, and lyrics for the series.

Fan sub reviews, analysis and trouble shooting, CD information, and links.

A collection of screenshots sorted by episode available for tracks 1-5. Contains some broken links.

A collection of fanfiction catering to multiple tastes and pairings. Read the work of others, or upload your own.

Comprehensive site including story introduction, character descriptions, episode summaries, essays, manga information, manga scans, buying information, Kumagoro shrine, OVA information, multimedia downloads, images, fan works and links. Low and high bandwidth versions of the site are available.

A Gravitation site dedicated mostly to Ryuichi and Kumagoro. Includes screencaps, character profiles and fanfiction