Question: I'm looking for a solution that allows me to create a professional-looking documentation site with custom branding and domain control.

Docuo is a powerful option for building modern documentation sites. It supports a Docs-as-Code workflow, integrates with GitHub, and lets you customize logos, brand colors and site layouts. One-click deployment and automatic updates when you change content make it easy to use. It also has more advanced features like search engine optimization metadata, content search and data analytics to try to keep people engaged.

Another good option is Doocs, an AI-augmented product documentation builder that tries to make documentation easier. It's got an AI Copilot to help you write and a clean, polished design that's optimized for search engines. You can customize branding and set up a website with a custom domain, so it's good for companies that want to keep their product identity without hiring technical experts.

HelpKit is a no-code tool that turns Notion documents into a professional help center or documentation site. It supports custom domains, search engine optimization and real-time collaboration. The system also integrates with tools like Slack and Hubspot, so it's a good option for companies that want to build a trustworthy knowledge base without requiring coding skills.