Uncloud is an open-source platform for self-hosting and scaling web applications without the complexity of Kubernetes. Here are its main features:

Core Capabilities:

• Docker Compose-based workflow - Deploy apps using familiar Docker Compose files

• Zero-downtime deployments - Rolling deployments with no service interruption

• Automatic HTTPS - Free TLS certificates via Let's Encrypt with built-in Caddy reverse proxy

• Cross-machine scaling - Scale applications across multiple servers/VMs

Architecture:

• Fully decentralized - No central control plane to maintain; each machine holds a synchronized copy of cluster state

• Secure private network - WireGuard mesh network with automatic peer discovery and NAT traversal

• Service discovery - Built-in DNS that automatically tracks services across the network

• Load balancing - Distributes traffic across container replicas on different machines

Developer Experience:

• Simple CLI - Docker-like commands to control your entire infrastructure

• No image registry required - Build, push, and deploy with one command

• Infrastructure as Code - Define your stack in Docker Compose format

• Deploy anywhere - Works on cloud VMs, dedicated servers, bare metal, or on-premises

Key Benefits:

• Full control over infrastructure and data

• Predictable costs without per-request pricing

• No vendor lock-in

• Mix different cloud providers and own hardware freely

It's essentially a PaaS-like experience (similar to Heroku or Fly.io) but running on your own infrastructure.