| Company/Organisation | Users | Servers | Contact | Details |
| Greenpeace International | Screenshot |
| Harvard University, Faculty of Arts and Sciences | thousands | 4 Compaq Tru64 | Details |
| National Portuguese Government Agency | 1,000 | 8 Mail Servers (Exchange) and 1 Webmail Server (Apache/SSL) |
| NYU School of Medicine |
| Universidad Tecnica Federico Santa Maria | Michael Slusarz |
| University of Colorado at Boulder | Michael Slusarz | Details |
| University of Michigan | 81,000 | IMP / Horde: 9 x supermicro 6013P-8 (dual 2.8GHz Xeon P4, 4GB RAM); MySQL: 2 x supermicro 7043P-8R (dual 2.8Ghz Xeon P4, 8GB RAM, RAID 1+0) | Liam Hoekenga |
| University of Texas at Austin, Department of Physics | 1,000 | Dell Poweredge 2400 server, 2x600 Mhz, 512MB memory, Raid5 across 6 disks | Eric Rostetter |
| Yale University |
| Case Western Reserve University, EECS Department | hundreds | 2 Sun X1 and 1 Sun V280R | Simon Kuhn |
| Nottingham City Council | 2,000 (webmail) | 1x quad-Xeon mailserver (500MHz, 4GB RAM), 2x dual-Xeon webservers (2.4GHz, 2GB RAM) - infrastructure upgrade imminent, to add more resilience | Richard Heggs |