Open source
Centrifugo
Self-hosted server for realtime messages and live updates
Realtime and VideoScalable realtime messaging
Alternatives to Ably
12 tools like Ably, chosen by what they do. About Ably
Freemium
Liveblocks
Realtime sync, presence and comments for collaborative apps
Realtime and VideoCollaboration infrastructure
Open source
LiveKit
Open source framework for voice, video and realtime AI agents
Realtime and VideoOpen source realtime video
Freemium
Curated
Mux
Video API for streaming, analyzing and transforming video
Realtime and VideoVideo API for developers
Curated
Vapi
Platform for building, testing and deploying voice AI agents
Realtime and VideoVoice AI agent platform
Freemium
Pusher
Hosted APIs for realtime features like live updates and chat
Push MessagingRealtime channels and push
Open source
Supabase
Open source Postgres backend with auth, APIs, storage and realtime
Backend as a ServicePostgres backend
Open source
InstantDB
Open source backend for real-time apps with a built-in database
Backend PlatformsRealtime backend for frontends
Freemium
Nylas
API for email, calendar and meeting data across providers
Email and MessagingEmail and calendar APIs
Freemium
Mailgun
Email API for sending, receiving and tracking transactional mail
Email and MessagingEmail API for developers
Freemium
Cloudinary
Cloud service to store, transform and deliver images and video
StorageImage and video hosting