| 601 |
Massachusetts Institute of Technology | United States | academic | 1.6.x XML Manakin | | |
| 602 |
Massey University, New Zealand | New Zealand | academic | 1.7.x XML Manakin | | |
| 603 |
Materials Docents En Xarxa, Consortium of Academic Libraries of Catalonia (CBUC) and the Supercomputation Centre of Catalonia (CESCA) | Spain | academic | 1.5.x JSP | | |
| 604 |
Mechanics Institute, Chinese Academy of Sciences | China | academic | 1.4.x | | |
| 605 |
Medicine Sans Frontier (MSF) | United States | research center | | | |
| 606 |
meiho university | Taiwan | academic | 1.4.x | | |
| 607 |
Meiji Univeristy | Japan | academic | | | |
| 608 |
Metabiblioteca | Colombia | nonprofit | 1.7.x JSP | | |
| 609 |
Miami University | United States | academic | | | |
| 610 |
Mie University | Japan | academic | | | |
| 611 |
Mingdao University | Taiwan | academic | | | |
| 612 |
Ministerio de Ambiente | Peru | government | 1.5.x JSP | | |
| 613 |
Ministerio de Educación | Argentina | government | 1.7.x XML Manakin | | |
| 614 |
Ministério da Educação - MEC | Brazil | government | | | |
| 615 |
M N Dastur & Company (P) Ltd | India | commercial | 1.5.x JSP | | |
| 616 |
Montana S.A. | Peru | commercial | 1.7.x JSP | | |
| 617 |
Moog Inc | United States | commercial | 1.3.x and earlier | | |
| 618 |
Moore Theological College | Australia | academic | 1.7.x XML Manakin | | |
| 619 |
Mote Marine Laboratory | United States | research center | 1.6.x JSP | | |
| 620 |
Mount Holyoke College | United States | academic | | | |
| 621 |
Mount Holyoke College | United States | academic | 1.5.x JSP | | |
| 622 |
Mount Saint Vincent University | Canada | academic | 1.5.x XML Manakin | | |
| 623 |
Muhimbili University of Health and Allied Sciences | Tansania | academic | 1.8.x JSP | | |
| 624 |
Muhlenberg College | United States | academic | 1.5.x JSP | | |
| 625 |
Mukogawa Women’s University | Japan | academic | | | |
| 626 |
Muroran Institute of Technology | Japan | academic | | | |
| 627 |
Nagasaki University | Japan | academic | | | |
| 628 |
Nagoya Institute of Technology Repository System | Japan | academic | | | |
| 629 |
Nagoya University | Japan | academic | 1.6.x JSP | | |
| 630 |
Nanhua University | Taiwan | academic | 1.4.x | | |
| 631 |
nani | India | other | | | |
| 632 |
Nanyang Technological University | Singapore | academic | 1.6.x XML Manakin | | |
| 633 |
Nara Institute of Science and Technology | Japan | academic | | | |
| 634 |
Nara University | Japan | academic | | | |
| 635 |
Narmada college of Science & Commerce BBA Programm | India | academic | 1.5.x JSP | | |
| 636 |
NASA Langley Research Center | United States | government | 1.5.x JSP | | |
| 637 |
National Agricultural Library, United States Department of Agriculture | United States | government | | | |
| 638 |
National Agricultural Research System | India | research center | 1.7.x JSP | | |
| 639 |
National Aviation University | Ukraine | academic | 1.8.x JSP | | |
| 640 |
National Bank of Ukraine | Ukraine | government | | | |
| 641 |
National Center of Educational Research and Develo | Egypt | research center | 1.6.x XML Manakin | | |
| 642 |
National Central University | Taiwan | academic | 1.3.x and earlier | | |
| 643 |
National Centre for Antarctic and Ocean Research (NCAOR) | India | government | | | |
| 644 |
National Centre for Radio Astrophysics | India | research center | 1.5.x JSP | | |
| 645 |
National Changhua University of Education | Taiwan | academic | 1.4.x | | |
| 646 |
National Chemical Laboratory, Pune | India | research center | | | |
| 647 |
National Chengchi University | Taiwan | academic | | | |
| 648 |
National Cheng Kung University | Taiwan | academic | | | |
| 649 |
National Chiao Tung University | Taiwan | academic | | | |
| 650 |
National Chiayi University | Taiwan | academic | 1.4.x | | |
