STM32Cube
MOOC – FreeRTOS on STM32 (Playlist)
STM32CubeMX – With Example Work-flow
STM32Cube – Drivers and Middleware for STM32 ARM Cortex-M MCUs
STM32duino
STM32duino FreeRTOS
github.com/stm32duino/STM32FreeRTOS, Real Time Operating System implemented for STM32