Adafruit FONA 808 Shield - Mini Cellular GSM + GPS for Arduino
Amazon.com: Raspberry Pi GSM/GPRS/GNSS Bluetooth HAT Expansion Board GPS Module SIM868 Compatible with Raspberry Pi 2B 3B 3B+ 4B Zero Zero W Support Make a Call,Send Messagess,Data Transfer : Electronics
NEO-6M GPS Module — PMD Way
A9G GSM/GPRS+GPS Module Wiki - DFRobot
LoNet - Mini GSM/GPRS/GPS Breakout
Adafruit FONA 808 - Mini Cellular GSM + GPS Breakout : ID 2542 : $49.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Amazon.com: SIM808 Module GSM GPRS GPS Development Board + IPX SMA GSM GPS Antenna Support 2G Network for Arduino Raspberry Pi : Electronics
SIM808 Module GSM GPRS GPS Development Board SMA W/ GPS Antenna for Arduino | eBay
GSM/GPRS/GPS Shield (B) - Waveshare Wiki
Interfacing GSM and GPS Module using Arduino: A step-by-step guide tutorial for tracking — Steemit