Version of camunda community edition

Hi I am new at camunda BPM…
Is camunda v7.3 free(community edition )??.where I can find all features for the last version(camunda community edition) ?

Are you sure you’re right about that version number?
7.14 is the newest version.

I asked about v7.3 because it is explained in article and i want to know if this version free or open source ?
then in the second quesion i need features of the last version of community edition(free) for compare in my study with another BPM
can i get help?

Every version of the (including the latest one) has a free open source edition with exactly the same features as the enterprise engine.
You can check out this for details:

The only difference between the open source version of the platform and the paid for version is some additional features in cockpit and camunda optimize.