Ably
A serverless platform to power dependable realtime digital experiences at scale.
Uptime SLA
Up to 99.999%
Free Tier Messages
6M per month
Free Tier Connections
200 concurrent
About Ably
Ably provides a suite of APIs and a global edge network for building and scaling realtime applications. Its core product is a pub/sub messaging service that uses WebSockets, allowing developers to implement features like live chat, data broadcast, and push notifications. Ably guarantees message delivery, ordering, and state continuity even over unreliable networks. The platform also offers higher-level products like Ably Chat for building rich chat experiences and Ably Spaces for adding collaborative features such as live cursors and member locations. It serves a wide range of use cases from live dashboards and financial data streaming to audience engagement and IoT device control.
Core Platform Features
Pub/Sub Messaging
Globally distributed, low-latency publish/subscribe messaging.
Presence
Track device and user presence on channels in realtime.
Message History
Retrieve previously published messages on a channel.
Push Notifications
Unified API for delivering native push notifications to iOS and Android devices.
Integrations
Stream data to third-party systems like Kafka, Kinesis, and serverless functions.
Primary Use Cases
Live Chat
Power 1:1, group, and large-scale live stream chat.
Multiplayer Collaboration
Enable features like live cursors, avatars, and component locking.
Live Data & Dashboards
Stream financial prices, sports scores, and other live data.
Audience Engagement
Live polling, Q&A, and interactive virtual events.