HP iLO Mobile
Not everyone runs an enterprise-grade Gen8 HP Server with iLO Version 4, but I’m running two right now, and being able to get a full set of out-of-band (IPMI) hardware information (heat, power, fans, etc.) is a godsend. I use Sonicwall Mobile Connect to VPN into my lab network, and then start up HP iLO Mobile to get a remote console and environmental conditions; it has changed the way I work. No more having to bring a full laptop everywhere I go (kind of embarrassing to have to take one to a dinner party). Plus, because the remote console requires .Net, it won’t run on a Mac (without VMware Fusion, Parallels, etc.), but it runs just fine on my Nexus 7....