Similar to LinkedIn for UIUC students: complete a profile and search for internships, full-, and part-time jobs. Search by position, location (incl. on campus), or company. Handshake hosts events including virtual career fairs, allowing students to sign up through the platform and view which employers will be in attendance.
Information on over 66 million U.S. businesses and 2 million Canadian businesses including industry codes, company executives, and business expenditures. Solid starting point for researching companies.