JTAG Hat – Blinkinlabs
USB 3.2 Gen1 And Gigabit Ethernet HUB HAT for Raspberry Pi, 3x USB, 1x Gigabit ETH, Driver-Free - PiShop.us
USB 3.2 Gen1 HUB HAT For Raspberry Pi, 4x USB 3.2 Gen1 Ports, Driver-Free
264x176p 2.7-inch 3-Color E-Ink Display HAT (B) for Raspberry Pi and J — KKSB Cases
Sequent Microsystems Smart Fan HAT for Raspberry Pi | Elektor
Zebra Unicorn HAT Case - Raspberry Pi 3 B+ and Pimoroni Unicorn HAT HD » C4Labs
SB Components LoRa HAT for Raspberry Pi (EU868) | Elektor
PoE HAT for Raspberry Pi 3 B+ | Satistronics
PI-16ADC - Alchemy Power - Development Board, ADC HAT For Raspberry Pi A+/B+/Pi-2/Pi-3/Pi-4, 16-Channel
Amazon.com: Official Raspberry Pi Power Over Ethernet (PoE) HAT for Raspberry Pi 3 B+ and 802.3af PoE Network : Electronics
SparkFun Qwiic / STEMMA QT HAT for Raspberry Pi : ID 4688 : $7.95 : Adafruit Industries, Unique & fun DIY electronics and kits
Cluster HAT v2.5
RPI-HAT-POE+ - Raspberry-pi - Add-on Board, PoE HAT, Raspberry Pi 3 Model B+
Raspberry Pi 3 Wireless Hat – Widgetlords Electronics
Raspberry Pi 4B/3B+/3B X708 V2.0 UPS HAT & Power Management Board with – Geekworm
Raspberry Pi 3 Case for dAISy HAT – Wegmatt
Raspberry Pi A+/B+/Pi2/Pi3 Prototyping HAT (RPi-Proto-HAT) - Watterot
HAT RACK - PlasmaDan Electronics
The Top 10 HATs and pHATs for Raspberry Pi
Power Over Ethernet (PoE) HAT for Raspberry Pi 3 B+ 4 and 802.3af PoE
Best Raspberry Pi HATs 2023: Expansion Boards for Every Project | Tom's Hardware
Top 20 Raspberry Pi HATs & Shields You Should Try - Latest Open Tech From Seeed
PoE HAT for Raspberry Pi 3 Model B+ | Development Modules | Ivmech Mekatronik & İnovasyon
DVMPi for Raspberry Pi 3 B+ and DVMega UHF or VHF/UHF HATs » C4Labs
Raspberry Pi PoE+ HAT
I2C HAT for Raspberry Pi 2 & 3 - RobotShop
Raspberry Pi Sense HAT - Adafruit | Mouser
