Yes, you've read that right. Brizy Cloud is the only website builder that not only offers an unlimited free account but also lets you attach unlimited custom domains to your projects for free.
There are some limits in place in terms of unique visitors in the free plan.
You can link projects with as many custom domains you want up to 100,000 unique visitors per year. This limit applies on your Brizy Cloud account across all your projects.
This restriction is lifted on the Personal and Studio plans.