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.
Hello Slavius. A Dhrystone is used for cores/processors performances.
To benchmark the IDEs, you may compare the IDE requirements (RAM), the start-up time, the build performances (compile time and code size), ... a big job!