miniSpartan3 is a $25 Xilinx Spartan 3A FPGA Board with HDMI Output - CNX Software
$18 Tang Nano 4K FPGA board comes with HDMI output, optional camera - CNX Software
K7 Fpga Development Board 3g 6g Sdi Pcie Sfp Fiber Lvds Hdmi Video Board - Abs Sensor - AliExpress
EP2C5T144 FPGA HDMI Core - Share Project - PCBWay
ALINX AX7035: Artix-7 XC7A35T FPGA Development Board
Raspberry Pi HDMI to CSI-2 Adapter Board (supports up to 1080p25fps) | Elektor
$69 miniSpartan6+ Board with Xilinx Spartan 6 FPGA Features an HDMI Port (Crowdfunding) - CNX Software
SparkFun's Snō Shoe Brings Full-Size HDMI, Qwiic, and USB Type-C to the Alorium Snō FPGA Dev Board - Hackster.io
HDMI Receiver/Transmitter HSMC Daughter Card
KNJN.com - FPGA-RS232 boards
ALINX HDMI Output Module Directly pluggable into FPGA Development Board|Demo Board| - AliExpress
HDMI Transmitter Expansion Module - HD video upto 1080p | Numato Lab
Amazon.com: ALINX Brand Intel ALTERA FPGA Development Board Cyclone IV Video Image Processing HDMI Input/Output (FPGA Board + Program Loader) : Electronics
SDRAM&HDMI Shield for Mojo
Alinx Av4075: Altera Cyclone Iv Ep4ce75f Fpga Development Board Video Image Processing Hdmi Input Output 1080p - Demo Board - AliExpress
fpga4fun.com - HDMI
iCEBreaker FPGA | Crowd Supply
Xilinx Fpga Zynq7020 Development Board Arm Cortex A9 Zynq7000 Xc7z020-2clg Ethernet Hdmi Compatible + Xilinx Platform Cable Usb - Integrated Circuits - AliExpress
Amazon.com: ALINX Brand XILINX A7 FPGA Development Board Artix-7 XC7A35T Ethernent HDMI PFC (FPGA Board with DA Module) : Electronics