| Operating System | Hosts | Highest Uptime |
|---|
| BeOS |
2 |
1 Hours 32 Minutes |
| Darwin |
12 |
54 Days 6 Hours 59 Minutes |
| Embedded |
67 |
1 Years 131 Days 2 Hours 27 Minutes |
| FreeBSD |
86 |
4 Years 240 Days 1 Hours 5 Minutes |
| Linux |
402 |
3 Years 221 Days 4 Hours 26 Minutes |
| Mac OS X |
1 |
1 Days 2 Hours 43 Minutes |
| mIRC |
1 |
16 Days 19 Hours 16 Minutes |
| OpenBSD |
13 |
2 Years 76 Days 4 Hours 39 Minutes |
| OpenVMS |
15 |
1 Years 42 Days 23 Hours 18 Minutes |
| OpenVMSClust |
4 |
12 Years 127 Days 20 Hours 32 Minutes |
| OS/2 |
3 |
250 Days 7 Hours 50 Minutes |
| Unknown |
1 |
49 Days 16 Hours 41 Minutes |
| Windows |
615 |
272 Years 74 Days 12 Hours 28 Minutes |