Integrated Systems Inc. (ISI) was an embedded software company[1] founded by Naren Gupta in 1980/1981.

[2][3][4] Summit Partners invested in 1987,[5] the company listed in 1990, and it was acquired by Wind River Systems in 2000.

[6][5][7] Naren Gupta served as President/CEO of ISI until 1994, and as its chairman until the company was bought by their competitor Wind River Systems in February 2000.

Later he served as vice-chairman and CEO of Wind River Systems.

The company's main products were: