INGA is an Open Source Wireless Sensor Node for many different applications. INGA was developed at IBR as Inexpensive Node for General Applications and became part of many projects.
Current release version: 2.6-20131107
For more information see the INGA project website:
http://www.ibr.cs.tu-bs.de/projects/inga/.
Contiki is an open source operating system that runs on tiny low-power microcontrollers and makes it possible to develop applications that make efficient use of the hardware while providing standardized low-power wireless communication for a range of hardware platforms.
Contiki is used in numerous commercial and non-commercial systems, such as city sound monitoring, street lights, networked electrical power meters, industrial monitoring, radiation monitoring, construction site monitoring, alarm systems, remote house monitoring, and so on.
For more information, see the Contiki website: