TapTalk.io - TapTalk.io is a complete in-app chat SDK and messaging API - Easy integration and customizeable.
OneLogin - On-demand SSO, directory integration, user provisioning and more
MongooseIM platform - The massively-scalable XMPPJabber mobile messaging platform, for mobile and web, by Erlang Solutions
TeamPassword - TeamPassword helps you manage and share access to the apps, services, and tools your team needs to keep projects moving.
Chat by Stream - Build and ship in app messaging in a few hours
Teramind - Teramind provides a user-centric security approach for monitoring.