Hi Hab,
there are also another IDEs, but those are 3rd party IDEs like Multi IDE from Green Hills and some IDE from Wind River. But these two are under license.
Please look at the following links:
Real-Time Operating Systems (RTOS), Embedded Development Tools, OptimizingCompilers, IDE tools, Debu...
Wind River
About the JTAG probe, directly with S32 Design Studio, you can use PEMicro Multilink Universal FX, or for example Lauterbach, which has it's own software, but it is compatible with .elf files created in S32 Design Studio.
Universal Multilink FX High-Speed Development Interface|NXP
LAUTERBACH DEVELOPMENT TOOLS
If you have any other questions, please feel free to write me back.
Regards,
Martin