Latest Waterfox 54 user agents:

User Agent PlatformDevice
Mozilla/5.0 (Windows NT 6.3; Win64; x64; rv:54.0) Gecko/20100101 Firefox/54.0.1 Waterfox/54.0.1 Windows 8Unknown
Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:54.0) Gecko/20100101 Firefox/54.0.1 Waterfox/54.0.1 Windows 7Unknown
Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:54.0) Gecko/20100101 Firefox/54.0.0.1 Waterfox/54.0.0.1 Windows 7Unknown
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:54.0) Gecko/20100101 Firefox/54.0.1 Waterfox/54.0.1 Windows 10Unknown
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:54.0) Gecko/20100101 Firefox/54.0.0.1 Waterfox/54.0.0.1 Windows 10Unknown
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.9; rv:54.0) Gecko/20100101 Firefox/54.0.1 Waterfox/54.0.1 Mac 10Unknown
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:54.0) Gecko/20100101 Firefox/54.0 Waterfox/54.0 Mac 10Unknown
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:54.0) Gecko/20100101 Firefox/54.0.1 Waterfox/54.0.1 Mac 10Unknown