Development tools for Zephyr on STM32Workbench for Zephyr: VS Code extension to set up, build, flash and debug Zephyr applications on STM32.Devicetree manager: browse, edit and visualize Zephyr devicetree, STM32CubeMX-like for Zephyr.
The universe smiles when combined with CubeMX. Setup of a project and integration of middlewares haven't been easier. I now do a fair share of my development on this platform.