Segger Microcontroller Systems is a multinational company dealing in middleware for embedded devices and development tools. The company, founded in 1991, is headquartered in Hilden, Germany with a US office in Westminster, Massachusetts.
Segger offers one of the smallest complete ANSI "C" embedded graphics package and GUI available . Segger's RTOS (embOS) is part of Oki Semiconductor's World's first complete ARM-based ZigBee Developer's Kit.
Segger also develops a JTAG emulator for ARM7, ARM9, ARM11, ARM Cortex-M0 / M1 / M3 / R4 cores. This device is called the J-Link. It is also repackaged and sold as an OEM item by Analog Devices as the mIDASLink, Atmel as the SAM-ICE, Digi International as the Digi JTAG Link, and IAR Systems as the J-Link and the J-Link KS. This is the only JTAG emulator that can add Segger's patented Flash breakpoint software to an RDI compliant debugger to enable the setting of multiple breakpoints in Flash while running on an ARM device which is typically hindered by the two available hardware breakpoints .
For enhanced emulation features Segger offers a Trace Emulator, J-Trace that works with the ARM ETM interface and enables engineers to trace back their code execution.