Whereas some experimental and theoretical work has been carried out on the basic understanding and damping of thermoacoustic oscillations, very little knowledge is available on technical uses. In part 1 of this paper, a complete model for the design of thermoacoustic engines was presented and experimentally verified with a semi-technical device. In this part, we discuss different possibilities of applications, including an electric generator, a cold compressor, thermoacoustic coolers and a drive for a pulse tube refrigerator. The discussions show that all of these applications are possible. They have some advantages and disadvantages in common, e.g. simplicity with few moving parts, moderate power density and delicate design. These engines have some potential to find applications for special uses, but for most cases, they are not likely to replace the classical devices.