1、Pimoroni Automation HAT for Raspberry Pi
With relays, analog channels, powered outputs, and buffered inputs (all 24V tolerant), this home monitoring and automation controller allows you to hook up a plethora of goodies to your Raspberry Pi all at once. Better still, each channel has an indicator LED which means you can see what's happening with your setup at a glance. Even the analog channels have dimming LEDs that allow you to see the value they are currently sensing.

https://www.adafruit.com/product/3289

2、EdgeBox-RPI
一款使用树莓派3核心板设计的工业控制器。他在一个紧凑的铝合金外壳里面集成了树莓派3核心板，RS232,RS485,CAN,HDMI,USB等接口，覆盖了大多数工业通讯接口与协议。不仅可以用于车载，边缘计算，同时集数据采集,协议转换,边缘计算,数据上云,运动控制等功能于一体。为您的行业应用提供一个开箱即用的树莓派解决方案。

https://www.openembed.com/products/51.html

3、MyPi Industrial IoT Integrator Board
http://www.embeddedpi.com/

4、MCC HATs
https://www.nxez.com/partner-mcc

5、Revolution Pi
Revolution Pi 的基础模块叫作 RevPi 核芯板，装有 Raspberry Pi 计算模块。该计算模块包含两个 IC：一个 Broadcom BCM2835 SoC 带 500 Mbyte RAM 和一个 4 Gbyte eMMC 闪存。该模块通过主板插座提供 1.8 V、3.3 V 和 5 V。采用单排200针宽插座，所有 IO 信号连接到主板。
http://www.hkaco.com/zdh/KUNBUS/revolution/revolution.html

6、netPI - build, ship, run secure on the Edge!
https://www.netiot.com/netpi/industrial-raspberry-pi-3/

7、Open Source IPC based on Raspberry Pi
https://revolution.kunbus.com/
https://revolution.kunbus.de/shop/en/

8、balenaFin: a board for fleet owners
https://www.balena.io/fin/
https://www.balena.io/blog/announcing-balenafin-v1-1/

9、Strato Pi
Strato Pi can be employed for professional applications where extreme reliability, ruggedness and compliance with technical and safety directives are required.
https://www.sferalabs.cc/strato-pi/

10、Raspberry Pi Compute Module with Ethernet
Raspberry Pi Compute Module with Ethernet, aluminium enclosure, and 20x4 LCD display
http://hasseb.fi/shop2/index.php?route=product/product&product_id=57

11、Edge Processing with Raspberry Pi
http://www.brainboxes.com/industrial-edge-controller
http://www.brainboxes.com/product/bb-400/neuron-edge-industrial-controller-8-dio-rs232-422-485-serial-bt-wifi-nfc-usb-2-ether
http://www.brainboxes.com/faqs/search/bb-400

12、VIKI (Versatile Intelligent Controller for Industry) Schematic, Bill of Materials and Component Placement Diagrams
https://www.element14.com/community/docs/DOC-92647/l/viki-versatile-intelligent-controller-for-industry-schematic-bill-of-materials-and-component-placement-diagrams