# automation

Caddy is a 75k-star, Apache-2.0 web server whose automatic HTTPS changed the industry — every feature ships in the free build, no paid tier. A 5,000-word teardown of what it delivers, the xcaddy plugin rebuild model, multi-instance storage coordination, ACME rate limits, the single-maintainer bus factor, and exactly where your certificates go.

Every push notification you receive went through a company's servers before it reached your phone. ntfy is a 33k-star, Apache-2.0 pub-sub server you can run yourself — but the iOS story has a catch nobody mentions.

changedetection.io is the Apache-2.0, self-hosted web page change monitor with 33,000+ stars. Here's how it works, why your watchlist is a privacy liability on hosted services, the real costs, and the security defaults you must fix before exposing it.

n8n: 191k stars, 1500+ integrations, native AI agents with LangChain, and self-hosted automation. The Zapier alternative that respects your data.