There are 2 repositories under usb-host topic.
Open source library to access USB Mass Storage devices on Android without rooting your device
CherryUSB is a tiny and portable USB Stack (device & host) for embedded system with USB IP
ESP32 software USB host through general IO pins. We can connect up to 4 USB-LS HID (keyboard mouse joystick) devices simultaneously.
A WiFi enabled USB Keylogger and Keystroke injection tool
Eclipse ThreadX - USBX is a high-performance USB host, device, and on-the-go (OTG) embedded stack, that is fully integrated with Eclipse ThreadX RTOS
USB host library 2.0 for Zero/M0/SAMD
Basic USB 1.1 Host Controller for small FPGAs
USB Host Co-processor
A simply trick for interpret a 16-bit/axis mouse using USB_Host_Shield_2.0. (Logitech G502)
MIDI DIN to MIDI USB Host Converter
Efficient USB host stack for embedded systems equipped with a USB host or OTG controller. Includes many class drivers such as MSC, HID, CDC-ACM, and USB2Ser.
zx spectrum 128 emulator on single esp32
Arduino ESC POS printer library
Convert USB keyboard, mouse, MIDI to Bluetooth
ESP8266 software USB host through general IO pins. We can connect up to 2 USB-LS HID (keyboard mouse joystick) devices simultaneously.
Raspberry Pi USB host MIDI hub
A network <=> ESP32 <=> USB (FTDI) <=> 3D printer Bridge
USBTMC Host driver
Raspberry Pi CM4 that plugs directly to TV/monitor
Playground of RaspberryPi baremetal (V3D, HDMI Audio, DMA, DWC2 USBHost, UART, Framebuffer)
Arduino USB pass through demos
Use a Raspberry Pi Pico to interconnect MIDI devices via a USB hub or old school MIDI
Use a Raspberry Pi Pico board to process USB MIDI data between a USB MIDI Keyboard or other device and a PC or other USB MIDI Host
Using the native USB interface of ESP32 S2/S3
USB Metamorph
Software USB-LS 4 hosts on stm32f103c8t6 gpio
DIY MIDI button controller from QWERTY USB keyboard
Print pictures on a USB thermal receipt printer
ESP32 USB Host HID Keyboard for Arduino