Services for Finding Related Papers

Citation GeckoGiven a set of 'seed papers,' you can visualize the most commonly-cited papers, either in an interactive flow chart/timeline or an interactive web
Related ReferencesSimilarly to Citation Gecko, takes a list of papers and finds papers that are also quite similar, except it is not interactive
Connected PapersAlso a similar idea to Citation Gecko, but newer and has additional features
CoCitesAlso a similar idea to Related References, but also newer and has additional features
sciteTakes a paper's in-text citation and pulls up the lines in that cited paper that are being referenced, says whether those lines provide supportive or disconfirmatory evidence