The standard FG one broke for like 6 months then it was … kind of fixed (if you did stuff to adjust it), RFG is just better in every way (I do still need to switch GT6 to it…).
Automatically acquired by the IDE (assuming not manually adding in jar’s but using dependencies correctly). After refreshing workspace or switching to RFG that doesn’t have that stupid FG bug, either works. Otherwise you can download it manually using the normal mvn commands, nothing special there.