Contiki is an open-source operating system specifically designed for the Internet of Things (IoT). It is tailored for small, low-power microcontrollers and is ideal for networked and memory-constrained embedded systems. Contiki provides features such as multitasking, a TCP/IP stack, and an event-driven kernel, making it suitable for a wide range of networked applications. It supports various hardware platforms and is well-suited for wireless sensor networks, smart cities, and other IoT implementations. The project is community-driven, with contributions from developers worldwide.