ThingSpeak - Open source data platform for the Internet of Things. ThingSpeak Features
IoTPlotter - IoTPlotter.com is a service which collects data from your IoT devices for long-term graph plotting and storage. It's completely free and made for the maker community.
The IoT Guru - the IoT cloud backend company
AWS IoT Device Management - Onboard, organize, monitor, and remotely manage connected devices at scale
Beebotte - Beebotte is a cloud platform providing key building blocks to accelerate the development of the...
SocketXP - Raspberry Pi and IoT device remote access, monitoring, control and management at scale.