As shared by @EJOHA System Workbench for STM32 (aka. SW4STM32) is quite old fashion solution despite functional one. Latest update is Version v2.9, updated on Friday, April 12, 2019 what's quite a long time considering a product based on some open source contributions (i.e Eclipse & CDT). As addon since STM32 portfolio has been enriched a lot ... SW4STM32 is not aware of.
Since STM32CubeIDE is STMicroelectronics branded and alive solution (trend is about 3 releases per year).
STM32CubeIDE is sharing same basis as SW4STM32 (i.e. Eclipse & CDT one) but adding much more features:
+ Large part of STM32Cube ecosystem is integrated within STM32CubeIDE (target selector, example browser / importer, device configuration tool, ...)
+ Thanks Atollic acquisition 3 years ago, all fully valuable former TrueStudio product features are integrated (advanced debug features, build analyzer, stack analyzer, ...)
According to me considering both solutions are for free quite obvious to rely on STM32CubeIDE today.
Cherry on the cake STM32CubeIDE is supporting a fully reliable SW4STM32 projects importer just in case you have some legacy data at a point.
