Contiki is an open source, highly portable, networked, multi-tasking operating system for memory-constrained embedded systems. It includes a multitasking kernel, a TCP/IP stack and a set of application programs, and a low-power radio communication stack. It is written in C and designed to be very small: it runs comfortably in a few kilobytes of RAM.
License: BSD License (revised)
Changes:
Significant bugfixes and performance improvements
were made to the data collection protocol. Data
presentation in the Contiki collect program was
improved. Power consumption was reduced for the
X-MAC radio mechanism. Performance improvements
and bugfixes were made to the Coffee flash file
system. A workaround was made for a problem with
the CC2420 radio.