The macOS (Apple's Mac operating system) version of Jitterbit Design Studio is supported on macOS version 10.13.6 through 10.14 (Mojave). Design Studio is currently not certified on macOS 10.15 (Catalina).
There are no particular software requirements. Jitterbit automatically installs or includes the required Java Runtime Environment specifically for use with Design Studio such that it does not conflict with other Java installations that may already be installed.
The version of Java shipped with Harmony Design Studio is the AdoptOpenJDK JREas of version 9.8 for Windows and as of version 10.2 for macOS. This JRE is licensed as described at the OpenJDK website.
Jitterbit recommends these hardware and virtual machine specifications for workstations used with Jitterbit Design Studio at a minimum:
4 GB RAM
10 GB available hard drive space
Internet connection with access to a browser to communicate with Jitterbit Harmony
Access to outbound port 443 (HTTPS)
Either as a direct hardware installation or as installation on a virtual machine from VMWare, VirtualBox, Amazon AWS, or Rackspace that is configured for the specific Windows or macOS versions outlined above