Elsevier is Wolters Kluwer's biggest rival. Elsevier was founded in Amsterdam, Noord-Holland} in 1880. Like Wolters Kluwer, Elsevier also competes in the Professional Services sector. Compared to Wolters Kluwer, Elsevier generates $2.7B less revenue.
Thomson Reuters is Wolters Kluwer's #2 rival. Thomson Reuters's headquarters is in Toronto, Ontario, and was founded in 2001. Like Wolters Kluwer, Thomson Reuters also competes in the Professional Services space. Thomson Reuters generates 118% of Wolters Kluwer's revenue.