---
source_url: https://www.pubnub.com/docs/chat/sdks/overview
title: Build chat with PubNub SDKs (deprecated)
updated_at: 2026-05-29T11:08:33.566Z
---

> Documentation Index
> For a curated overview of PubNub documentation, see: https://www.pubnub.com/docs/llms.txt
> For the full list of all documentation pages, see: https://www.pubnub.com/docs/llms-full.txt


# Build chat with PubNub SDKs (deprecated)

:::warning Use Chat SDKs
This documentation is deprecated. Use any of our dedicated [Chat SDKs](https://www.pubnub.com/docs/chat/overview) to quickly implement chat functionality in your application.
:::

PubNub Chat SDKs are built on top of the core PubNub Network, with over 15 PoPS (Point-of-Presence) globally, response times of less than 100 milliseconds, and 5-9’s uptime SLA.

## Get started

Get started by using sample apps with pre-built chat features.

* [React Native](https://www.pubnub.com/tutorials/getting-started-chat-sdk-react-native/)
* [Swift](https://www.pubnub.com/tutorials/getting-started-chat-sdk-ios/)
* [Kotlin](https://www.pubnub.com/tutorials/getting-started-chat-sdk-android/)
* [Flutter](https://www.pubnub.com/tutorials/getting-started-chat-sdk-flutter/)
* [Redux](https://pubnub.github.io/typescript-ref-app-team-chat/docs/introduction)
* [Unity](https://www.pubnub.com/blog/how-to-build-realtime-chat-with-unity-multiplayer-chat/)

## Demos

Play with interactive chat demos that feature different chat types and use cases.

* [Chat in 10 Lines of Code](https://www.pubnub.com/demos/10-line-chat/)
* [Live Audience Engagement Chat](https://www.pubnub.com/demos/virtual-events/)
* [Group Chat](https://www.pubnub.com/demos/group-chat-react-demo/)
* [Group Chat](https://www.pubnub.com/demos/flutter-chat/)
* [Gaming](https://www.pubnub.com/demos/unity-pubnubprix/)

## Sample apps

View GitHub sources of sample chat apps built with PubNub SDKs.

* [Flutter](https://github.com/pubnub/flutter-ref-app-simple-chat)
* [Java](https://github.com/pubnub/chat-examples-java/)
* [React Native](https://github.com/PubNubDevelopers/GettingStarted-ReactNative-SDK-Tutorial)
* [Redux](https://github.com/pubnub/typescript-ref-app-team-chat)
* [Swift](https://github.com/pubnub/swift-ref-app-team-chat)
* [Unity](https://github.com/pubnub/Unity-Realtime-Chat-Room-Tutorial)
* [Kotlin](https://github.com/pubnub/kotlin-telemedicine-demo)

## Features

Read about features offered by PubNub SDKs:

* [Users](https://www.pubnub.com/docs/chat/sdks/users/setup) - Set up an account and manage user metadata, permissions, presence, and mentions.
* [Channels](https://www.pubnub.com/docs/chat/sdks/channels/channel-types-names) - Learn about channel names, types, subscriptions, and memberships.
* [Messages](https://www.pubnub.com/docs/chat/sdks/messages/sending-messages) - Manage real-time, historical, and unread messages. Handle files, reactions, and events.
* [Mobile Push Notifications](https://www.pubnub.com/docs/chat/sdks/push-notifications) - Integrate mobile devices with 3rd party push services (FCM or APNs) to trigger mobile push notifications.
* [Moderation](https://www.pubnub.com/docs/chat/sdks/moderation/filtering) - Moderate messages for profanity and spam. Flag messages, ban or mute users.
* [Integrations](https://www.pubnub.com/docs/chat/sdks/integrations/overview) - Monitor content and images, add on-the-fly translation, chatbots, GIFs and stickers libraries.

## Sign up

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