iStat displays a huge range of detailed system stats, including CPU, memory, disk space, network usage, temperatures, fan speeds and more.
• Monitor Macs, PCs and servers • Monitor computers running macOS, Windows, Linux, FreeBSD, AIX, Solaris and other BSD/Linux based OSs by installing iStat Server. Macs can view local stats, too — just install iStat Server and iStat on the same Mac. Download iStat Server from bjango.com/istatserver/ • History • iStat includes history graphs for most stats, covering 1 hour, 24 hours, 7 days, 30 days, 3 months, 6 months and 12 months. • Secure • iStat connects to iStat Server securely over the internet or via Bonjour. A password or five digit passcode can be used to restrict access. Authorization can be reset from the server side, if required. • Network tools • iStat also contains the handy network tools, ping and traceroute. • iCloud • Effortlessly keep your list of servers in sync across your iOS devices and Macs. Compatibility: OS X 10.10 or later, 64-bit processor More info - https://itunes.apple.com/us/app/istat/id1148868081?mt=12 
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