Best part is being able to look at something that's NOT GoogleHangoutsGreen. Ugh. So sick of looking at that green across all my devices since I live on Hangouts. LOVE the dark interface.
The part that makes me cry a little, is that this is the desktop version of the not-as-good Hangouts client. There are 2 official ones available as chrome extensions, both made by Google. This one has the permanently attached conversation window to the contact list. The other one (and the one with better ratings on the extension store), is the one where the contact list is separate from the conversation windows, a la traditional IM clients.
Typ.io
Gulp
Maybulb ⭐️
InVision