Railway is a developer deployment platform founded in 2020 in Phoenix, Arizona (YC S20, $50M+ raised). It auto-builds and deploys apps from Git repos, hosts Postgres/Redis, bills by usage with a $5 monthly free allowance, and is a popular modern Heroku alternative.
Fly.io is a US edge application deployment platform that runs Docker containers on 35+ global edge nodes for extremely low access latency, supporting direct deployment from Dockerfile or Git with automatic SSL, load balancing, and scaling, plus a generous free tier for individual developers and small projects.
Founded in 2016 and headquartered in San Francisco, USA, Replit is an online IDE and AI coding platform. With 50+ programming languages, the built-in Ghostwriter AI assistant, and one-click deployment, it serves more than 25 million developers.