Very cool, in looking at something on FloatHub's support site I just came across this:

https://support.floathub.com/hc/en-us/articles/360015513914-New-Feature-Soft-FloatHub

FloatHub is making a software only version of their product available.  Basically, you can use a small computer (including a Raspberry Pi it appears to run the FloatHub software and upload your monitoring data to FloatHub's servers.  FloatHub has a free monitoring option, which is understandably somewhat limited, and makes this software available for free under MIT's open source license.  All-in-all pretty cool if you're a little geeky.

Ben