Cinnamomum cassia elongated leaves that are long and have a decidedly reddish colour when young. Chinese cassia is a close relative to Ceylon cinnamon ("C. verum"), Saigon cinnamon ("C. loureiroi"), also known as "Vietnamese cinnamon", Indonesian cinnamon ("C. burmannii"), also called "korintje", and Malabar cinnamon ("C. citriodorum") from Sri Lanka. In all five species, the dried bark is used as a spice. Chinese cassia's flavour is less delicate than that of Ceylon cinnamon. Its bark is thicker, more difficult to crush, and has a rougher texture than that of Ceylon cinnamon. Most of the spice sold as cinnamon in the United States,
SPICE and CIDER have been integrated into open source ngspice. The integrated circuit industry adopted SPICE quickly, and until commercial versions became well developed many IC design houses had proprietary versions of SPICE. Today a few IC manufacturers, typically the larger companies, have groups continuing to develop SPICE-based circuit simulation programs. Among these are ADICE at Analog Devices, LTspice at Linear Technology (available to the public as freeware), Mica at Freescale Semiconductor and TINA at Texas Instruments. Similarly to Linear Technology, Texas Instruments makes available a freeware Windows version of the TINA software (called TINA-TI), which also includes their version of