Custom solution

Own and third party libraries

Realtime Chat

Based on WebSocket and Firebase technologies. Have flexible UI and background push notification

WebRTC Communication

Audio/Video call via WebRTC. Building own branch of WebRTC project. Android/iOS support

XMPP/Jaber Client

XMPP client library for server bases on MongooseIM. Using stanza for REST API requests. Smack integration

Audio Video Calls

Integration with Plivo/Twilio in custom libraries and apps (iOS/Andrpod)

Payments

Experience in using Stripe (iOS/Android), In-App Billing (iOS), In-App Purchased (Android)

SIP client

Custom Android/iOS SIP client based on stable and tested PJSIP library

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