Best Chat SDK Products in 2025

SendBird is messaging-as-a-service.

Key SendBird features:

Scalability Feature-rich Customizability Robust moderation tools

VoIPstudio is an award-winning VoIP system that offers businesses of all sizes a scalable communication solution. It’s inexpensive, easy-to-use, offers a full suite of PBX features, and is fully integrated for CRM.

Key VoIPstudio features:

Call Recording Call Forward Call Analytics and Reporting Call Conferencing

Try for free paid Free Trial $4.99 / Monthly (User)

Brings voice and messaging to your web and mobile applications.

Key Twilio features:

Scalability Ease of Integration Global Reach Feature-Rich Platform

Open Source

Agora.io is a real-time communications provider delivering video and voice communications across devices and global networks.

Key Agora.io features:

High-Quality Real-Time Communication Cross-Platform Support Scalability Global Coverage

The #1 CPaaS Solution for Small, Medium & Enterprises.

Key MirrorFly features:

Comprehensive Feature Set Highly Customizable Scalability Security

Open Source paid Free Trial

The Real-Time Communication Platform for building interactive connections. Tencent RTC(TRTC) helps you quickly embed video call, voice call, chat, and conference API/SDK to your web and mobile apps.

Open Source freemium $9.9 / Monthly

With the ZEGOCLOUD's voice & video APIs/SDKs, you can build and create your own Android, iOS, and Web apps for a voice chat room, live video streaming, or video calling.

Key ZEGOCLOUD features:

Video call Voice call Live streaming In-app chat

freemium

Build and ship in app messaging in a few hours.

Key Chat by Stream features:

Scalability Customizability Rich Features Developer-Friendly

Open Source

APIs for the development of scalable newsfeeds and chat applications.

Key GetStream.io features:

Scalability Real-time Updates Flexibility Feature-rich

Open Source paid

Bandwidth offers SIP trunking, Emergency communications, and Voice & Messaging APIs.

Key Bandwidth features:

Extensive API Offering Carrier-Grade Network Cost-Effective Pricing Regulatory Support

Cloud communication and data backend.

Key QuickBlox features:

Comprehensive Communication Features Customization and Extensibility Robust Backend Infrastructure Cross-Platform Support

Seamless Real-Time Chat Integration for Your Applications.

Key CometChat features:

Feature-Rich Easy Integration Customizable UI Scalability

Open Source freemium $109.0 / Monthly (Based on the Monthly Active Users (MAUs))

Chat API & In-App Messaging SDK for Mobile & Web Apps Innovate fast, save development cost and delight users with a scalable, secure and customizable Chat.

Key Applozic features:

Rich Messaging Features Customizable UI Cross-platform Support Real-time Communication

Plivo simplifies your customer engagement.

Key Plivo features:

Global Reach Comprehensive API Competitive Pricing Lower Latency