Best alternatives to Conecta in 2026

Zero-downtime deployment usually means one of two things: pay for a managed platform (Heroku-style PaaS, or a cloud provider's app service), or stand up Kubernetes, which solves the problem but at the cost of running an entire orchestration cluster for what might be one or two VPS boxes. Conecta targets the gap in between — developers who self-host on a VPS and want blue-green deployments (run the new version alongside the old, switch traffic over once it's healthy, avoid downtime) without adopting Kubernetes just to get that one capability. It ships as a single Docker image (built on Deno and the Docker CLI) that acts as a control plane: it runs HTTP health checks to confirm a new deployment is actually ready before switching, uses its own internal authoritative DNS (serving A, AAAA, and SRV records) to route traffic between blue and green versions, persists configuration in SQLite, and exposes a webhook-based API so any CI/CD system can trigger a deployment. It's explicitly designed with no vendor lock-in — bring your own registry, proxy, and TLS setup. Free and open source.