Qarnot enables green cloud services for 3D rendering, and computing. The Qarnot API is used to manage tasks, monitor progress, monitor instances, retrieve logs, manage resources, retrieve results, and track account balances. The Qarnot API features REST architecture, and JSON responses. Q.rad by Qaront is a green computing heater that utilizes embedded microprocessors as heat source, and is used to heat households. This system is silent and gets computing instructions from the Internet.