Open source hardware is hardware whose design is made publicly available so that anyone can study, modify, distribute, make, and sell the design or hardware based on that design. The hardware's source, the design from which it is made, is available in the preferred format for making modifications to it.
The W5100S-EVB-Pico is a microcontroller evaluation board based on the Raspberry Pi RP2040 microcontroller chip and full hardwired TCP/IP controller W5100S chip. The W5100S-EVB-Pico has the same role as the Raspberry Pi Pico platform and includes W5100S, so the Ethernet function is basically included.
WIZnet Ethernet HAT (Hardware Attached on Top) is a Raspberry Pi Pico pin-compatible board that utilizes W5100S and supports both 3.3V & 5V. Please refer to this link to find more information about W5100S. Raspberry Pi Pico Pin-Compatible Ethernet (W5100S Hardwired TCP/IP CHIP)
WizFi Shield utilizes fully certified WizFi210 wifi module to provide your Arduino with wireless capability. SPI interface is used to allow for faster transmission speed and to free up the Arduino’s UART. All the software and hardware materials are freely available and open source.
WIZwiki-W7500 is a WIZwiki platform board based on the W7500, the ARM Cortex-M0 that integrates 128KB Flash and hardwired TCP/IP core. If you use WIZwiki-W7500 board, you can easily evaluate the W7500 and test its performance and all functions.
WIZwiki-W7500P is a SoC platform board based on the W7500P chip ( ARM Cortex-M0 that integrates 128KB Flash and hardwired TCP/IP core, MAC & PHY. If you use WIZwiki-W7500P board, you can easily evaluate the W7500P and test its performance and all functions.