Stream Chat vs. Bandwidth

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.

With Bandwidth, enterprises deliver exceptional communication experiences everywhere. We enable you to integrate voice, messaging, and emergency services into your communications the way you want. Offering the simplicity of one command center, the Bandwidth platform enables a fully customized employee and customer communications stack with: - Dynamic communication APIs - The most direct-to-carrier integrations in the world - An owned and operated network that reaches 65+ countries - Automation to manage it all and get call quality and message deliverability insights via the Bandwidth