Realtime

Send and receive messages to connected clients.

Supabase provides a globally distributed Realtime service with the following features:

• Broadcast: Send low-latency messages between clients. Perfect for real-time messaging, database changes, cursor tracking, game events, and custom notifications.
• Presence: Track and synchronize user state across clients. Ideal for showing who's online, or active participants.
• Postgres Changes: Listen to database changes in real-time.

What can you build?#

• Chat applications - Real-time messaging with typing indicators and online presence
• Collaborative tools - Document editing, whiteboards, and shared workspaces
• Live dashboards - Real-time data visualization and monitoring
• Multiplayer games - Synchronized game state and player interactions
• Social features - Live notifications, reactions, and user activity feeds

Check the Getting Started guide to get started.

Examples#

[

Multiplayer.dev

Showcase application displaying cursor movements and chat messages using Broadcast.

](https://multiplayer.dev)

[

Chat

Supabase UI chat component using Broadcast to send message between users.

](https://supabase.com/ui/docs/nextjs/realtime-chat)

[

Avatar Stack

Supabase UI avatar stack component using Presence to track connected users.

](https://supabase.com/ui/docs/nextjs/realtime-avatar-stack)

[

Realtime Cursor

Supabase UI realtime cursor component using Broadcast to share users' cursors to build collaborative applications.

](https://supabase.com/ui/docs/nextjs/realtime-cursor)

Resources#

Find the source code and documentation in the Supabase GitHub repository.

[

Supabase Realtime

View the source code.

](https://github.com/supabase/realtime)

[

Realtime: Multiplayer Edition

Read more about Supabase Realtime.

](https://supabase.com/blog/supabase-realtime-multiplayer-general-availability)