Avenir Health is a policy and research organization that develops, supports and implements projection models to improve public health globally. Our clients include ministries of health, international organizations, university partners and corporate clients. Please visit our website to learn more about the full breadth of our activities: www.avenirhealth.org

The Spectrum Beta web page is a site where our models are shared while they are under development. We strongly recommend that end users visit the Avenir Health software page to obtain current, release versions: Software downloads

We invite you to download a list of revisions and update: Version history. This file notes all revisions to Spectrum since its inception in 1997.

Spectrum / OneHealth

Beta Version (Caution: Beta versions include changes that may be unstable. If you are not part of the team testing these changes, we strongly urge you to use the public release linked below)

Public Release (AvenirHealth.org)

Country Data Package (Single install file containing all country specific demographic data and Help language files)


  • AIM Beta 2021 5.891 Beta 3 (27 November 2020) AIM Beta