SaaSKevin

SaaSKevin lets a SaaS product offer white-label custom domains to its users without building the plumbing itself. You tell it where your app already runs, paste a widget into your settings page and read one header on the backend, and SaaSKevin handles DNS verification, SSL certificates and routing of custom-domain traffic to your origin server. Setup is described as taking about five minutes.

The embeddable widget lets your users add, verify and manage their own domains inside your app, with one-click DNS setup and clear prompts, and it can be styled with your colors and fonts. Every domain gets HTTPS automatically, pages are delivered from nearby regions with caching, and an admin dashboard helps with tracking and troubleshooting. The site compares this with building it yourself, which it says needs over a hundred lines of backend code, against roughly three lines here. The number of domains is not capped, and pricing is based on how many domains you add.