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µC/OS is a full-featured embedded operating system.
Features support for TCP/IP, USB, CAN bus, and Modbus.
Includes a robust file system, and graphical user interface.

Reliable

Micrium software includes comprehensive documentation, full source code, powerful debugging features, and support for a huge range of CPU architectures.

Efficient

Micrium software offers unprecedented ease-of-use, a small memory footprint, remarkable energy efficiency, and all with a full suite of protocol stacks.

Trusted

Engineers across the world building industrial controls, medical devices, and aerospace systems know they can rely on Micrium software for the foundation of exceptional products.

Real-Time Kernels

µC/OS-III and µC/OS-II

At the core of µC/OS are the µC/OS-III and µC/OS-II real-time kernels; highly portable, scalable, preemptive, real-time, deterministic, multitasking kernels for microprocessors, microcontrollers and DSPs.

Offering unprecedented ease-of-use, the µC/OS kernels are delivered with complete 100% ANSI C source code and in-depth documentation. They runs on a huge number of processor architectures, with ports available for download from Micrium.com.

The µC/OS kernels allow you to adjust your system's memory footprint based on your design requirements, saving valuable memory space.

Learn more about Micrium's real-time kernels

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Communication Software

TCP/IP

A compact, reliable, high-performance TCP/IP protocol stack.
Features dual IPv4 and IPv6 support, an SSL/TLS socket option,
and support for Ethernet, Wi-Fi, and PHY controllers.

Learn more about Micrium's TCP/IP stack

USB Device

Efficient USB device stack designed for embedded systems. Includes support for Audio, CDCACM, CDCEEM, HID, MSC, and Vendor classes.

Learn more about our USB device stack

USB Host

Efficient USB host stack for embedded systems equipped with a USB host or OTG controller. Includes many class drivers (MSC, HID, CDC ACM, USB2Ser and AOAP).

Learn more about our USB host stack

CAN Bus

A CAN protocol framework that enables easy and clean implementation of CAN communication paths. Optimized for speed, flexibility and size, and high portability.

Learn more about our CAN bus stack

Modbus

An industrial communications protocol for connecting industrial devices. Scalable, works with any CPU, and supports any number of communications channels.

Learn more about our Modbus stack

Storage & Display Software

File System

A compact, reliable, high-performance and thread-safe embedded file system for microprocessors, microcontrollers and DSPs. An optional journaling component provides fail-safe operation, while maintaining FAT compatibility.

Learn more about Micrium’s file system

Graphical User Interface

A flexible graphical user interface for embedded applications that require a graphical display. Supports a range of interface styles including smartphone-like graphics with 32-bit color. With touch-screen support activated, you can provide your products with state-of-the-art user interfaces.

Learn more about Micrium’s embedded GUI

Ported to Over 50 Architectures

µC/OS is Available for Your Platform

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For a complete list of current architectures supported, visit the Micrium Download Center.
Contributed ports and drivers are welcome.

Licensing

Open-Source Apache 2.0 License

Check out our licensing page for more information.