ModusToolbox™ software
Download the ModusToolbox™ Setup program from https://softwaretools.infineon.com/tools/com.ifx.tb.tool.modustoolboxsetup. Refer to the instructions in the ModusToolbox™ software installation guide for how to install the necessary ModusToolbox™ tools and packages.

IAR Embedded Workbench (Windows only)
We recommend and have tested IAR Embedded Workbench version 9.60.3 or later for PSOC™ Control C3 devices. This version can be used with all ModusToolbox™ supported devices.
The default installation location for the IAR compiler is C:\iar\[version]\arm. Set the
CY_COMPILER_IAR_DIR environment variable to the correct
installation path using forward slashes. Alternatively, you can set this variable in the Makefile for each application. Refer to the ModusToolbox™ tools package user guide for more details about build system
variables.
J-Link
For J-Link debugging, download and install J-Link software:
https://www.segger.com/downloads/jlink/#J-LinkSoftwareAndDocumentationPack