**6lowpan**
6lowpan is an acronym of IPv6 over Low power Wireless Personal Area Networks.

**Contiki** Contiki is a small, open source computer operating system developed for use on a number of smallish systems ranging from 8-bit computers to embedded systems on microcontrollers, including sensor network motes.

**eCos** 
eCos (embedded Configurable operating system) is an open source, royalty-free, real-time operating system intended for embedded systems and applications.

**TinyOS** 
TinyOS is an open source component-based operating system and platform targeting wireless sensor networks.

**Wireless sensor network** 
A wireless sensor network (WSN) is a computer network consisting of spatially distributed autonomous devices using sensors to cooperatively monitor physical or environmental conditions, such as temperature, sound, vibration, pressure, motion or pollutants, at different locations.

**ZigBee** 
ZigBee is the name of a specification for a suite of high level communication protocols using small, low-power digital radios based on the IEEE 802.15.4 standard for wireless personal area networks (WPANs).