Top 3 Uptime's by Uname:

+-----+----------+-----------------------------+
| Pos |    Uname |                      Uptime |
+-----+----------+-----------------------------+
|  1. |   *Linux | 19 years, 4 months, 18 days |
|  2. | *FreeBSD | 9 years, 11 months, 29 days |
|  3. | *OpenBSD |  3 years, 1 months, 18 days |
+-----+----------+-----------------------------+