Unfortunately it appears that Autofill (https://www.tohodo.com/autofill/) for Chromium browsers is going to be moving away from a purely free model as it has been hitherto:
I certainly do not condemn the author/developer for moving to this model.
I'm seeking alternative and up-to-date options to replace Autofill. Any suggestions would be appreciated as I prefer to keep this kind of functionality entirely free and open - and preferably open source if possible.