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Chat

Topic-level profile capturing the Chat API category in the API Evangelist network. This profile defines a reference vocabulary and a generic OpenAPI shape for chat APIs that manage conversations, messages, and participants, and is used as a baseline when cataloguing chat platform APIs (such as Slack, Discord, Microsoft Teams, Twilio Conversations, and conversational AI platforms) into the broader catalogue.

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Providers working in Chat

Providers whose own tags share at least two of this topic's tags, most shared first — the top 30 of 176.

ProviderAboutRatingAPIs
Pypestream Pypestream is a New York based enterprise conversational and agentic AI company, founded in 2015, whose platform deploys voice and chat AI agents ("Pypes" and microapps) into Fortune 500 contact centers across insurance, health insurance,… developing 7
Slack Slack is a cloud-based team collaboration platform that provides chat, file sharing, and integrations with other tools and services. exemplar 32
Novu Novu is the open-source notification infrastructure for developers. A single REST API and workflow engine route a triggered event across in-app inbox, email, SMS, push, chat (Slack / Discord / MS Teams / WhatsApp) and custom channels — wit… strong 2
Gladly Gladly is a San Francisco–based people-centered customer service AI platform. The Gladly Hero agent workspace unifies voice, chat, SMS, email, and social into a single, channel-agnostic conversation per Customer, while Gladly Sidekick AI h… developing 1
Netomi Netomi (founded 2016 as msg.ai) is an enterprise agentic AI platform for customer experience. Its "Agentic OS for CX" orchestrates a network of AI agents across chat, email, telephony, social, search, MCP and API channels, layering a gover… developing 2
Intercom Intercom is an AI-powered customer service platform that enables businesses to build seamless customized experiences through its Help Desk and Messenger. The Intercom API allows developers to integrate with the Intercom platform using REST… developing 1
Discord Discord is a voice, video and text communication service used by hundreds of millions of people to hang out and talk with their communities and friends. developing 3
Beeper Beeper is a universal chat app that brings 12+ messaging networks — WhatsApp, Instagram, Telegram, Signal, Messenger, X, Google Messages, Google Chat, Google Voice, LinkedIn, Discord and Slack — into a single unified inbox across macOS, Wi… developing 1
Dixa Dixa is a conversational customer service platform with a REST API for managing conversations, queues, agents, routing, knowledge base articles, and customer satisfaction data. The API enables developers to build automated workflows, integ… developing 1
Stream Stream (GetStream.io) provides scalable, API-first infrastructure for in-app chat messaging, activity feeds, audio/video calling and livestreaming, and AI moderation. The server-side platform is a documented REST API (base https://chat.str… developing 6
Chatfuel Chatfuel is a no-code AI-powered chatbot and business-automation platform for conversational commerce across Meta-owned messaging channels — WhatsApp, Instagram, Facebook Messenger, TikTok, and an embeddable website chat widget. An officia… developing 3
Chatwoot Chatwoot is an open-source customer support and omni-channel messaging platform that provides REST APIs for managing conversations, contacts, agents, teams, labels, and integrating customer communication workflows. It supports live chat, e… developing 2
Ably Ably is a realtime messaging platform offering pub/sub, presence, push notifications, chat, LiveSync, and integrations over WebSocket and HTTP. Ably publishes its OpenAPI specifications publicly via the ably/open-specs GitHub repository, w… developing 3
Conversica Conversica is an AI conversation automation company - "The Conversation Company" - whose Revenue Digital Assistants and AI Agents hold two-way, natural-language conversations with leads and customers over email, SMS and website chat to gen… developing 1
Tidio Tidio is a customer service platform used by over 300,000 businesses that combines live chat, AI-powered chatbots (Lyro AI), and email ticketing into a unified support workspace. The platform exposes a REST OpenAPI for managing contacts, c… developing 1
CometChat CometChat is an in-app messaging platform offering chat, voice, and video SDKs plus a server-side REST Management API. The REST API (v3) manages users, auth tokens, groups, group members, messages, conversations, reactions, roles, and webh… thin 1
Synapse Synapse is the reference Matrix homeserver implementation maintained by Element (formerly by the Matrix.org Foundation). Written in Python and Rust, it implements the Matrix open standard for secure, decentralized real-time communication.… thin 1
Google Business Messages The Google Business Messages API enables agents to send messages, create events, and manage customer satisfaction surveys within conversations. It allows businesses to communicate with customers directly through Google entry points such as… thin 1
Quiq Quiq is an enterprise conversational AI and customer-experience platform for building, deploying, and governing agentic AI systems across digital and voice channels. Its products include AI Agents that resolve customer questions, AI Assist… thin 1
PubNub PubNub is a realtime communication platform supporting pub/sub, presence, chat, App Context (object metadata), Functions (server-less compute on the edge), Push Notifications, and IoT messaging across 1B+ devices. The PubNub REST API runs… thin 2
Agora Agora is a real-time engagement platform providing ultra-low latency voice, video, signaling, chat, interactive whiteboard, cloud recording, real-time speech-to-text, and conversational AI infrastructure for human-to-human and human-to-AI… thin 11
Kustomer Kustomer is an AI-powered customer service CRM that unifies conversations, customer data, automation, and reporting across channels. thin 1
Meya.ai Meya is a chatbot and CX-automation platform for building, coding, and launching customer-support conversational apps, digital assistants, and workflow automation. Developers use the Grid platform and Console to script flows in BFML (a YAM… thin 1
Crisp Crisp is a customer messaging platform offering live chat, shared inbox, helpdesk, chatbot, and CRM features for businesses of all sizes. thin 1
imbee imBee is an AI-powered business omnichannel messaging platform headquartered in Hong Kong that unifies customer conversations across WhatsApp, Instagram, Facebook Messenger, WeChat, LINE, and SMS into a single enterprise-grade inbox. The p… emerging 0
Mybots.pro myBots (operated by Global AI Group, Inc.) builds enterprise AI sales and support agents for messaging channels — WhatsApp, Instagram, Telegram, LinkedIn and web chat, under the Mia AI product name. Each agent qualifies inbound leads, answ… emerging 3
LivePerson LivePerson is a leading provider of conversational AI and digital customer engagement technology. Their platform enables enterprises to design, deploy, and manage AI-powered messaging, voice, and agent-assisted conversations across web, mo… emerging 9
Sierra Sierra is an enterprise conversational AI platform co-founded by Bret Taylor that builds and operates customer-facing AI agents across chat, SMS, WhatsApp, email, voice, and ChatGPT. Its Agent OS includes Agent Studio for building agents,… emerging 1
Decagon Decagon is an enterprise AI customer service platform that builds and operates voice, chat, and email AI agents on top of natural-language Agent Operating Procedures (AOPs). The platform includes the AI Agents Studio for authoring agents,… emerging 1
Robylon AI Enterprise AI customer-support platform spanning voice, WhatsApp, chat, email, social media and ticketing. The platform runs AI agents against a customer knowledge base with configurable personas, model selection, human-agent handover and… emerging 1

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ChatConversational AIConversationsCustomer ServiceMessagingReal-Time