Sign into the Evaluation Portal
You can directly download InterSystems IRIS Community and InterSystems IRIS for Health Community from https://evaluation.intersystems.com/Eval/. You will need to sign in with an InterSystems single-sign-on window, if you do not already have an account you can create one for free.
Once signed in, on the page you will see a link to the Community Edition. Click the Community Edition link to see the download options:
Download Options
From here, choose whether you would like InterSystems IRIS Community or InterSystems IRIS For Health Community, then choose your operating system and the version (remember that license files will expire 1 year after release, so its recommended to choose the most recent).
Finally, accept Terms of Service and Privacy Statement, and then select Download to begin downloading the installation kit.
For more information on the install, see the platform specific installation guides in the documentation