Is it always "etc." or can "etc" also be used?
Could this be broadened to other abbreviations? [I am not sure about the grammar here. Leave comments and I will edit.]
Example:
I want to implement modules such as comment, rating, tag, etc to my entities.
or
I want to implement modules such as comment, rating, tag, etc. to my entities.
?
The Wiktionary entry for "etc" redirects to etc. so I suppose the second line is the correct one. But it looks strange with a full stop in the middle of the sentence.

If you don’t like the look of
etc.you could switch out to the fullet cetera.