Flow Studio by Wia - Where people and things go to talk
iotlist - Discover the internet of things
Fieldbook - Create a database, as easily as a spreadsheet
Stampd - A document blockchain stamping service
Airtable - Airtable works like a spreadsheet but gives you the power of a database to organize anything. Sign up for free.
Endaga - Build your own cellular network. Just add power & internet.