Rule 34 is a AI tool on rule34.xxx. It outranks 48 other pages, is cited by 110 pages in this directory and holds 1 page here. Every number above is derived from the citation graph, never from crawled prose.

E-Hentai (110 citations), Kemono (110 citations), ExHentai (89 citations), Danbooru (88 citations), E621 (88 citations), FurAffinity (88 citations), Gelbooru (88 citations), Rule 34 Paheal (88 citations), Hentai Foundry (84 citations), Luscious Hentai (84 citations), Sankaku Complex (80 citations), Ascii2d (二次元画像検索) (21 citations) appear beside Rule 34 on the same pages, most-cited first.

Or keep going. You can open rule34.xxx directly.