Ably

Provides a realtime experience platform with pub/sub messaging, chat, and state synchronization that keeps chat, dashboards, and AI agent sessions continuous and in sync across devices. Sells to developers, engineering and product teams in B2B companies of all sizes building interactive applications. Delivered as cloud infrastructure via APIs and SDKs for multiple languages and platforms with integrations for cloud functions, queues, and streaming services, running on a globally distributed network.

Key features

• Pub/Sub messaging with guarantees
• Chat APIs for large user loads
• AI Transport for agentic sessions
• LiveObjects realtime state sync
• Spaces collaborative environments
• LiveSync database to frontend sync
• SDKs for multiple platforms
• Integrations for webhooks and queues
• Message ordering and idempotency
• Connection recovery and session continuity