Wikipedia
BlueSoleil
BlueSoleil is a Bluetooth software/driver for Microsoft Windows, Linux and Windows CE. It supports Bluetooth chipsets from CSR, Broadcom, Marvell etc. Bluetooth dongles, PCs, Laptops, PDAs, PNDs and UMPCs are sometimes bundled with a version of this software. The software is rarely needed on modern computers as well functioning bluetooth drivers for the most widely used bluetooth chips, have been available though Windows Update since Windows Vista.
BlueSoleil is developed by IVT Corporation and the first version was released in 1999.