| ARTstor, Inc. | General Support | 10/01/04 | $8,000,000 | New York, NY, United States | Public Knowledge |
| Ithaka Harbors, Inc. | General Support | 12/16/02 | $5,000,000 | New York, NY, United States | Public Knowledge |
| Council on Library and Information Resources | General Support III | 09/17/05 | $750,000 | Washington, DC, United States | Public Knowledge |
| Council on Library and Information Resources | General Support IV | 09/15/11 | $1,458,000 | Washington, DC, United States | Public Knowledge |
| ARTstor, Inc. | General Support | 12/15/03 | $5,000,000 | New York, NY, United States | Public Knowledge |
| Council on Library and Information Resources | General Support | 12/17/04 | $750,000 | Washington, DC, United States | Public Knowledge |
| Council on Library and Information Resources | General Support I | 12/17/99 | $2,600,000 | Washington, DC, United States | Public Knowledge |
| Anthology of Recorded Music, Inc. | General Operations | 03/20/06 | $3,500,000 | Brooklyn, NY, United States | Public Knowledge |
| Council on Library and Information Resources | General Support II | 09/19/03 | $750,000 | Washington, DC, United States | Public Knowledge |
| Council on Library and Information Resources | General Support V | 12/10/09 | $1,400,000 | Washington, DC, United States | Public Knowledge |
| University of Pittsburgh | Geographic Information Systems | 02/02/01 | $25,000 | Pittsburgh, PA, United States | Public Knowledge |
| Association of Research Libraries | German Reseach Libraries Project | 02/13/98 | $35,000 | Washington, DC, United States | Public Knowledge |
| Museum of Fine Arts, Boston | Giza Project | 10/01/04 | $545,000 | Boston, MA, United States | Public Knowledge |
| Museum of Fine Arts, Boston | Giza Project | 12/15/06 | $306,000 | Boston, MA, United States | Public Knowledge |
| Center for Research Libraries | Global Resource Network Planning | 03/17/08 | $29,500 | Chicago, IL, United States | Public Knowledge |
| North Carolina State University | Global Open KnowledgeBase - Phase II | 09/11/14 | $333,000 | Raleigh, NC, United States | Public Knowledge |
| Indiana University | Global Research Studies Publication Series | 09/16/10 | $755,000 | Bloomington, IN, United States | Public Knowledge |
| North Carolina State University | Global Open KnowledgeBase | 03/15/12 | $499,000 | Raleigh, NC, United States | Public Knowledge |
| Association of Research Libraries | Global Resources Program | 12/06/96 | $450,000 | Washington, DC, United States | Public Knowledge |
| University of California at Los Angeles | Internet Studies Planning Grant | 12/13/21 | $115,000 | Los Angeles, CA, United States | Public Knowledge |
| University of Cambridge | New Greek Lexicon Project | 06/03/11 | $296,000 | Cambridge, United Kingdom | Public Knowledge |
| University of Connecticut | Greenhouse Studios - Phase II | 06/06/19 | $500,000 | Storrs, CT, United States | Public Knowledge |
| Yale University | Research Libraries Group | 06/15/76 | $160,000 | New Haven, CT, United States | Public Knowledge |
| University of Pennsylvania | Research Libraries Group | 03/28/79 | $130,000 | Philadelphia, PA, United States | Public Knowledge |
| Woodrow Wilson International Center for Scholars | Metadata Harvesting Services | 06/15/01 | $150,000 | Washington, DC, United States | Public Knowledge |
