We at Wishbook have a B2B mobile application (Android & iPhone), wherein we are looking to implement Text & photo communication - between users 1-to-1, or from a user to his group of buyers. We are keen on something that can get us upto speed ASAP, offers good support, is mature library / server, and is also battery friendly.
We are now comparing between Layer, Applozic, QuickBlox & SendBird. Anyone used them? What protocols (XMPP / MQTT / custom / other) are used by them? Experience using it - interms of stable code base, etc? Also - we prefer open-source & more pocket friendly product as well.
Thanks, Arvind