| Operating System | Hosts | Highest Uptime |
|---|
| BeOS |
2 |
1 Hours 32 Minutes |
| Darwin |
15 |
89 Days 12 Hours 40 Minutes |
| Embedded |
67 |
1 Years 131 Days 2 Hours 27 Minutes |
| FreeBSD |
93 |
5 Years 64 Days 17 Hours 37 Minutes |
| Linux |
477 |
3 Years 331 Days 14 Hours 24 Minutes |
| Mac OS X |
1 |
1 Days 2 Hours 43 Minutes |
| mIRC |
1 |
18 Days 18 Hours 13 Minutes |
| NetBSD |
9 |
3 Years 4 Days 23 Hours 5 Minutes |
| OpenBSD |
18 |
2 Years 76 Days 4 Hours 39 Minutes |
| OpenVMS |
15 |
135 Years 37 Days 6 Hours 6 Minutes |
| OpenVMSClust |
4 |
14 Years 76 Days 4 Hours 41 Minutes |
| OpenVMSCluster |
1 |
10 Years 5 Days 1 Hours 17 Minutes |
| OS/2 |
3 |
250 Days 7 Hours 50 Minutes |
| Unknown |
1 |
49 Days 16 Hours 41 Minutes |
| Windows |
789 |
272 Years 74 Days 12 Hours 28 Minutes |