Elfz.io allows you to white label pages from websites like Notion along with features like forms, live chat, notion website custom domain, custom code, and more.
Cloak.ist - Connect any webpage to your custom domain, remove branding and add your own, add custom social meta tags, CSS, and Javascript.
servr - Enrich your app by serving custom domains
Rebrandly - Rebrandly is the easiest way to create, share and manage branded links.
chl.li URL shortener - A simple, modern, free and privacy-friendly URL shortener.
Cutt.ly - Free custom URL Shortener and branded URLs with advanced links tracking and Link Management Platform & API.
Ethereum URL Shortener - Write URLs to Blockchain forever ⛓