Ably

Ably provides enterprise-grade real-time infrastructure with guarantees that matter for critical applications: message ordering, exactly-once delivery, and global presence.

Key Features:

• Message Guarantees - Ordering and exactly-once delivery
• Presence - Real-time user presence tracking
• History - Retrieve messages from the past
• Push Notifications - Integrated push to mobile devices

Why enterprises choose Ably:

• Reliability Guarantees - SLAs for message delivery
• Global Edge - Low latency everywhere
• Message Persistence - Messages survive disconnections
• Compliance - SOC 2, HIPAA ready

Ably capabilities:

• Pub/Sub - Flexible messaging patterns
• Spaces - Collaborative experiences (cursors, avatars)
• Integrations - Connect to queues, databases, webhooks
• Stream Resume - Automatic reconnection handling

Ably is the choice when real-time reliability is business-critical. The delivery guarantees and enterprise features justify the premium for applications where message loss or duplication causes real problems.