What is the closest alternative to Railway app?

Railway is a Git-based cloud deployment platform for web services, databases, and background jobs, offering features like deployments via Git repository, Docker image, or Railpack, support for built-in databases such as PostgreSQL and MySQL, and persistent storage. While it provides a visual project canvas and supports background workers, it lacks true BYOC, GPU workloads, managed Kubernetes, and multi-cloud capabilities. Alternatives like Northflank, Render, Coolify, and Fly.io cater to different needs: Northflank offers advanced production capabilities such as multi-cloud deployment, self-serve BYOC, and GPU workloads; Render resembles Railway in workflow and UI but lacks customer-controlled deployments; Coolify provides full self-hosted control for those preferring infrastructure ownership; and Fly.io focuses on global distribution and low-latency deployments. The choice of alternative depends on specific requirements such as production SLAs, self-hosting needs, or global deployment priorities.