Differences with tigase / openfire and clustering

Hi there,

I was wondering what the differences between tigase and openfire are?

I know this has been exhausted in the past and from what I understood the tigase was better at scaling etc

These old posts I found from year 2009/ 2011 and wondered if anything has changed?

For scaling is tigase still the recommended platform or openfire can compete now.

Memory and resources in respect to openfire and tigase?

Are both being actively developed or one has a better release schedule than the other ?

Thanks in advance