# Connect Domain > Open-source, self-hostable custom-domain onboarding for SaaS: automatic DNS > configuration, automatic SSL (Let's Encrypt), and a reverse-proxy edge. The > open alternative to Entri. Your users bring their own domain; Connect Domain > detects the DNS provider, writes the records (or guides a manual step), > verifies ownership, issues HTTPS, and serves the traffic. ## Key facts - License: open source, self-hostable (run it on your own cloud) - Pricing: free to self-host - DNS auto-configuration across 19 providers, plus the Domain Connect open standard - Automatic HTTPS via Let's Encrypt at an on-demand TLS edge - Reverse-proxy edge that terminates TLS for connected domains and routes to your origin - REST API, webhooks, multi-tenant isolation, ownership verification (value-checked) ## Pages - [Home](https://connectdomain.app/): Product overview and how it works. - [Docs](https://connectdomain.app/docs): Quickstart, DNS providers, API reference, security, self-hosting. - [Entri alternative](https://connectdomain.app/compare/entri): Honest comparison with Entri. - [Get started](https://connectdomain.app/signup): Create an account. - [Source (GitHub)](https://github.com/ever-just/Customdomain): Open-source code. ## DNS providers auto-configured Cloudflare, GoDaddy, Route 53, Namecheap, IONOS, DigitalOcean, Vercel, Netlify, Google Cloud DNS, Azure DNS, Linode, Vultr, Hetzner, Gandi, deSEC, DNSimple, Porkbun, Name.com — plus Domain Connect for one-click provider consent, and a guided manual flow for everything else. ## Optional - [Architecture](https://connectdomain.app/docs/concepts/architecture): The control-plane / edge two-plane design. - [Security](https://connectdomain.app/docs/security/overview): Tenant isolation, secrets at rest, ownership checks. - [Full docs index](https://connectdomain.app/docs/llms.txt): Machine-readable index of every documentation page.