How do I download APSIM?

Click here to download or upgrade APSIM

Who requires an APSIM Licence?

Anyone who downloads and runs APSIM. There are two types of licences:

  1. General Use Licence, and
  2. Special Use Licence

If you are or plan to use APSIM without publishing and making publicly available data and/or results generated from using the APSIM, then you need to apply for a Special use Licence. If you use or develop APSIM and publish and make publicly available data and/or results, then you can choose the General Use Licence when you apply to download the model.

Please note there are two versions of APSIM. APSIM Classic (last release version was 7.10) and the newer APSIM Next Generation. Please note there will be no more major APSIM Classic Releases. However, there are currently more models available in APSIM Classic, so please refer to this list – Models in Release – APSIM

All access will be through approved licence agreements. The licences can be reviewed here: APSIM General Use Licence and APSIM Special Use Licence.

Both licences require all Improvements to the APSIM Software to be submitted to the APSIM Initiative for potential inclusion in the APSIM release. Ownership of the Improvements will be transferred to the APSIM Initiative. For more information, please refer to Improvements – APSIM

If you would like to discuss retaining ownership of Improvements made to the APSIM Software, please email