11 Most Popular Chat APIs

Chat applications are hugely popular these days. Most of us communicate daily to other people (or automated bots) by instant messaging, whether it be on a mobile phone, a desktop chat application, via a website, or within a video game. There are thousands of chat applications available, and many of these services are available to developers who want to add chat functions to their own applications.

Developers wanting to add chat functions to applications need to find the most suitable APIs to accomplish this task.

What is a Chat API?

A Chat API is an Application Programming Interface that developers use to programmatically connect to various chat services.

The best place to research these APIs is in the Chat category of the ProgrammableWeb API directory. In this article, we highlight the eleven most popular Chat APIs on ProgrammableWeb, based on website traffic.

1. WeChat API

WeChat is a social messaging application that works across different and multiple platforms. WeChat offers instant messaging, chat, video calls, and voice chats. The WeChat APITrack this API and SDK allow developers to access and integrate the functionality of WeChat with other applications. Some example API methods include managing users, managing accounts, and retrieving lists of chats and calls.

2. Google Chat API

Google Chat (formerly Hangouts Chat) is Google's chat and bot Platform service. The Google Chat APITrack this API returns bot data to establish a chat connection. By using the REST API, developers can list the spaces that the bot has been added to, list the members that belong to a space, and create, delete, and modify messages.

3. WhatsApp Business API

The WhatsApp Business APIs allow businesses to interact with and reach customers all over the world, connecting them using end-to-end Encryption to ensure only the intended parties can read or listen to messages and calls. A REST APITrack this API and Streaming (Webhooks) APITrack this API are available.

4. Skype Bot API

Microsoft's Skype is an application for making calls, video calls, and messaging across computers, tablets, mobile devices, the Xbox One console, and smartwatches. The Skype Bot REST APITrack this API allows developers to create and deploy messaging bots for Skype. Some of the API methods include accessing accounts, creating bots, and deploying bot messages. As of October 31st, 2019, the Skype bot channel no longer accepts new registrations, however, existing bots continue to work.

5. Mirrorfly API

Mirrorfly is a real time chat and messaging solution. The Mirrorfly APITrack this API allows developers to integrate chat, video, and voice functionality into their mobile and web applications. This service is customizable, comes with built-in WebRTC, and can be used for enterprise communication, in-app messaging, broadcasting, streaming, customer support, team chat, social chat, and personal chat. Both cloud-based and on-premises versions of Mirrorfly are available.

Mirrorfly SDK enables developers to build scalable and secure chat applications

Mirrorfly SDK enables developers to build scalable and secure chat applications. Image: Mirrorfly

6. Wire API

Wire provides chat and chatbot communications tools to enable companies to have chat and communication bots via video, messaging, voice, and text. The Wire API allows developers to access and integrate the functionality of Wire with other applications, with methods that include retrieving bots, sending messages, and retrieving messages.


ONLYOFFICE is an open-source platform for business collaboration and project management. The platform includes software for managing projects, collaboration, document management and a CRM. ONLYOFFICE includes an instant messaging application that enables real-time communications in chat rooms. The ONLYOFFICE APITrack this API exposes the functionality of the platform and gives developers programmatic access to it. Users can perform standard CRUD operations on groups, files, projects, forums, people and more.

8. Freshchat API

Freshchat is a customer messaging service from Freshworks featuring cross device support, AI automation, and targeted outbound messaging. The Freshchat APITrack this API allows developers to manage chat queries from website visitors. Methods are available to manage users, conversations, groups, outbound messages, agents and reports.

Freshchat connects with WhatsApp, Apple Business Chat, Facebook Messenger and other channels

Freshchat connects with WhatsApp, Apple Business Chat, Facebook Messenger and other channels. Image: Freshchat

9. Rocket.chat API

Rocket.Chat is a cloud-based chat platform headquartered in Brazil. The Rocket.Chat APITrack this API allows developers to integrate real-time chat communications with automated back-up capabilities. The API supports user, channel, and group management. A WebsocketsTrack this API and a GraphQL APITrack this API are also available.

10. SnapChat Snap Kit SDK

Snapchat is a popular photo sharing messenging service. SnapKit Track this API enables developers with the ability to integrate Snapchat features into applications via four avenues: Creative Kit, Login Kit, Bitmoji Kit and Story Kit. The API provides a way for users to to log into applications faster, brings Bitmojis into an application and integrates stickers, filters, links, and more. SnapKit also allows develpers to embed and filter publicly shared Snapchat Stories into an application or website. This APITrack this API provides indirect access to the SnapKit Android SDK and SnapKit iOS SDK.

11. Discord API

Discord is a messaging platform that offers organized channels for groups. It is aimed at gaming, education, and business communities. The Discord APITrack this API is available by sending HTTP requests with JSON responses to implement channels, guilds, invites, users, and voice features.

The list above is just a small sampling of the offerings in the Chat category. Find more than 320 APIs, 370 SDKs, 400 Source Code Samples and How-To articles there.

Be sure to read the next Chat article: ​Sendbird Announces Chat Platform Enhancements