Keep app "always on top" in El Capitan Is there a way to keep in app always in front of other apps? 

The tool referenced here - Afloat - doesn't work in El Capitan. Would love to keep iTerm2 always in the forefront but can't find a way to do this.
You could try to achieve this functionality with an application like "Afloat" as you mentioned already. But it seems to only work in El Capitan if you permanently turn off System Integrity Protection (SIP) which isn't recommended.   

However, here is the link to the program: https://github.com/millenomi/afloat

How to turn off SIP: https://github.com/millenomi/afloat/issues/22