Stream Chat vs. MessageFlow

Stream Chat is a messaging API and SDK suite for developers building in-app chat. Teams integrate it to ship production messaging in weeks instead of building and maintaining real-time infrastructure in-house. Client SDKs cover React, Swift, Android, Flutter, React Native, Angular, JavaScript, Unity, and Unreal, each with a UI kit you can customize or replace entirely. The backend runs on Go and RocksDB across 12 global edge locations, holding sub-40ms latency and 5M concurrent connections in a single channel behind a 99.999% uptime SLA.

MessageFlow is a send-it-all platform that makes cross-channel communication easy and effective. Backed by more than 20 years of expertise, it has helped companies connect with their audiences using reliably delivered email and SMS messages. It also supports mobile push notifications, RCS communications, and OTT applications. By integrating all of these messaging methods on a single platform, you can run precisely targeted campaigns at any scale. Security is our top priority.