Portainer comes in two flavours Portainer CE and Portainer Business. Portainer CE is open source, free forever and used by more than 500,000 developers worldwide. Portainer Business builds on CE and adds business related functionality.
You can find a feature comparision here.
Choose a Portainer Edition that you would like to Deploy
Portainer Application can be deployed to any of the following platforms, Click on your platform button to go to relevant Installation guide.
Requirements and Validated Configuration Matrix can be found here