Layer vs QuickBlox: What are the differences?

Developers describe Layer as "Build messaging, voice and video right into your app in minutes". Layer's asynchronous messaging fabric is capable of transporting payloads of any type. Get your users talking with chat, voice or video messaging. Pull them back in with push. Connect friends, colleagues or perfect strangers seamlessly. On the other hand, QuickBlox is detailed as "Connect your user with mobile group chat, content sharing, user accounts and more". Add powerful communication features to your mobile app and data services for your backend
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Layer and QuickBlox can be primarily classified as "Communications SDK" tools.

Some of the features offered by Layer are:

• Send any message payload (photos, videos, location, json data, etc) up to 2GB
• Build your UI quickly with sample UI components to get started
• User-expected communication features work right out of the box (full message state tracking, typing indicators, read receipts)

On the other hand, QuickBlox provides the following key features:

• Chat/IM
• User login/registration, SSO
• Video Calling