Best Chat SDK & API Software

Compare the Top Chat SDK & API Software as of April 2025

What is Chat SDK & API Software?

Chat SDK and API providers offer tools and services that enable developers to integrate real-time chat functionality into applications. These solutions typically provide pre-built components like chat interfaces, messaging systems, and notifications, reducing the need for custom development. Providers often offer APIs that allow seamless interaction with chat services, such as sending and receiving messages, managing user profiles, and customizing chat experiences. SDKs, on the other hand, often come with libraries and documentation to help developers quickly build and deploy chat features on mobile or web platforms. Some popular chat SDK & API providers also include advanced features like video calling, chatbots, and analytics for enhanced communication experiences. Compare and read user reviews of the best Chat SDK & API software currently available using the table below. This list is updated regularly.

  • 1
    TeleSign

    TeleSign

    TeleSign

    Deliver timely, personalized information through global SMS/RCS and voice cloud communications. Gain a deeper understanding of your customers from actionable global phone number and subscriber data intelligence. Code once and message your customers at scale using TeleSign’s Messaging API - complete with waterfall delivery between channels. TeleSign Messaging API includes SMS, RCS, and WhatsApp to help you build secure digital communications that connect you with your customers anywhere in the world. Integrate a single Messaging API and start sending reliable, secure SMS, RCS and WhatsApp messages to your customers today. Choose one or all three channels to broaden your programmable messaging strategy and expand your audience. Reach more customers with 120+ optimized points-of-presence and 700+ direct-to-carrier routes​.
  • 2
    Sudo Platform

    Sudo Platform

    Anonyome Labs

    Sudo Platform is an API-first, developer-focused ecosystem that delivers the tools necessary to empower our partners to quickly and completely deliver to end-user consumers the necessary capabilities to protect and control their personal information while navigating the digital world. It provides a modular, quick to implement, and powerful collection of the most important digital privacy and cyber safety tools. including safe and private browsing, password management, VPN, virtual cards, encrypted and open communications, and decentralized identity. This developer-focused platform includes: Developer-focused documentation API-first ecosystem SDK source code via GitHub Sample applications for test-to-deploy of various capabilities Vendor-brandable (white-label) apps for quick go-to-market deployments.
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