title: Computing giants launch free science metrics.
authors.forename: Declan
authors.initials: D
authors.lastname: Butler
mesh_terms: D015706:Bibliometrics; D020407:Internet / Q000706:statistics & numerical data*; D012106:Research / Q000706:statistics & numerical data*; D012108:Research Personnel / Q000706:statistics & numerical data*; D012984:Software / Q000191:economics / Q000600:supply & distribution*