There is only one download for the Valence Framework software (this may change in the future). When you first download and install the Valence Framework, you are using the Community Edition. The Community Edition is free, but has a reduced feature set, is limited to five concurrent sessions and does not come with maintenance (updates and support). To move up to the Enterprise Edition, you simply need to purchase a license key from CNX and apply it to your Valence Framework installation. The Commercial Developer license further grants the right to deploy your applications in commercial software or to host your applications as a service to outside customers. You should read the license to understand the full differences in licensing terms between each version.