One of my customer is asking questions about licensing. I know Suitecrm is AGPL , thats fine.
But what about the add-ons, are they also AGPL?
Some are/some aren’t. There are commercial addons available:
Ideally you should check the documentation that comes with the application/addon for clarification.
In some cases you may find that there are no details relating to the licensing. Safest option here is to assume that it is copyright in some fashion, but with public git repositories etc sometimes you can assume a different default licence. The same applies to sites such as stackoverflow etc.
If you ever create software, please always remember to include licensing as it makes everything a lot simpler for the end user.