Three-Independent-Gate FET(TIGFET) technology is one of the most promising candidates to succeed CMOS and FinFET technologies due to its low off-current, compact surface area, reconfigurable logic, and CMOS compatibility. In this paper, we present an open-source standard cell library based on silicon nano-wire TIGFETs, which enables efficient implementation of novel XOR-and-majority-based circuit designs. We also discuss logic synthesis methods tailored to take advantage of TIGFET capabilities to allow their potential to be realized at the system level. By combining the 10 nm TIGFET technology with a mixed logic synthesis tool, the PicoRV core design shows a 2.3x lower area and a 5.7x lower energy consumption, compared to an equivalent low-power 12 nm FinFET implementation.