Choosing an STM32 microcontroller by STMicroelectronics , a global semiconductor leader serving customers across the spectrum of electronics applications, is the easiest way for innovators to bring new products to life now that designers can choose from the industry's widest selection of free-of-charge Integrated Development Environments for STM32 MCUs. STM32 users can now choose from three IDEs from leading vendors, which are free of charge and deployed in close cooperation with ST.