The Inventek Systems ISM420R1-C33 is a GPS RF receiver module operating at 1.575GHz. It offers a sensitivity of -163dBm and supports I2C, SPI, and UART interfaces.
The u-blox MAX-M10S-00B is a GNSS module supporting multiple constellations including GPS, GLONASS, Galileo, and BeiDou. It features an operating voltage range of 2.7V to 3.6V and a sensitivity of -167dBm.
The Antenova M20050-1 is a drop-in GNSS receiver module supporting GPS, GLONASS, Galileo, and BeiDou constellations. It features a MediaTek MT3333 flash chip and a low profile SMD package.