Populus has been tested on macOS, Linux, Windows 7, Windows 8, Windows 8.1, and Windows 10. (Please be aware of Jave licensing requirements or use Open JDK as an alternative: ) To get Java please download Java from this website. You must have Java installed on your computer before you can run Populus. If you would like to see changes or enhancements, or have found an issues/bug, please contact us. Please try the troubleshooting steps on the Help and Contact page before contacting us. Every computer is setup differently and may have a unique configuration or Security setting that could prevent Populus from running. Please note that we are limited on the support we can provide. You can view it here: for more information. We have established a GitHub project site for source code management. Version 6.0 of populus is now Open Source. Issues with age-structured modeling and the inability to adjust values, have been resolved. Populus Version 6.0 has been re-released (January 2018) See below for download. Itasca Biological Station and Laboratories.Biochemistry, Molecular Biology and Biophysics.