Gitbook vs Read the Docs: What are the differences?
Gitbook: Document Everything! For you, your users and your team. It is a modern documentation platform where teams can document everything from products, to APIs and internal knowledge-bases. It is a place to think and track ideas for you & your team; Read the Docs: Create, host, and browse documentation. Read the Docs hosts documentation, making it fully searchable and easy to find. You can import your docs using any major version control system, including Mercurial, Git, Subversion, and Bazaar. We support webhooks so your docs get built when you commit code. There's also support for versioning so you can build docs from tags and branches of your code in your repository.
Gitbook and Read the Docs can be categorized as "Documentation as a Service &" tools.
Read the Docs is an open source tool with 5.25K GitHub stars and 2.87K GitHub forks. Here's a link to Read the Docs's open source repository on GitHub.
According to the StackShare community, Gitbook has a broader approval, being mentioned in 15 company stacks & 4 developers stacks; compared to Read the Docs, which is listed in 9 company stacks and 4 developer stacks.