Scalable self-hosted real-time messaging and state sync platform
Secure microVM sandboxes for AI agents
Stage
Established
Not given
Founded
2023
Not given
Based in
CY
Not given
Pricing model
Open source
Freemium
Pricing
Open source version is free. Centrifugo PRO available with flat licensing (no per-connection or per-message fees) and requires contacting sales for a quote.
Free plan: $0/month with $25 included usage and up to 5 running sandboxes. Starter: $20/month with $20 monthly usage and 20 running sandboxes. Pro: $99/month with $110 monthly usage and 100 running sandboxes. Scale: $399/month with $450 monthly usage and 500 running sandboxes. Usage metered at $0.01
Key features
WebSocket, HTTP-streaming, SSE, WebTransport, and gRPC transports
Channel history and message recovery
Flexible authentication and authorization
State synchronization with transactional consistency
Connection event proxying to backend
Online presence detection for users
Efficient binary Protobuf protocol
Resumable streams and transport fallback for AI applications
E2B SDK compatible API gateway
Multiple sandbox sizes (Small, Medium, Large, XL with 1-8 vCPU and 2-16 GiB)
Live terminal and desktop viewing
SSH access with VS Code Remote support
Pause and resume with memory intact
Long-running sandboxes on Pro and Scale plans
Credential vault for secrets management
Egress control with allow and deny lists
Custom Docker images via Dockerfile
What makes it different
Set up once and works forever with no ongoing configuration needed
Handles millions of concurrent connections with minimal hardware
Self-hosted so messages and data never leave your infrastructure
No per-connection or per-message billing
Works in production at scale with proven reliability
Direct E2B SDK compatibility without code rewriting
Usage-based billing with included credits, no overages on paused sandboxes