What are some alternatives?
When comparing Apiary and ReadTheDocs, you can also consider the following products
Postman Collections - Biggest library of ready-made API collections for Postman
GitBook - Modern Publishing, Simply taking your books from ideas to finished, polished books.
Gravitee.io - Gravitee.io is a flexible, lightweight and an open source API management solution.
MkDocs - Senaste Tweets från Tom Christie (@_tomchristie): "Another positive habit: Getting back into the Uke. Have that satisfying calloused feeling again now, like the fingertips on my left hand have been dropped in wax and dried.
Apigee - Intelligent and complete API platform
ReadMe - A collaborative developer hub for your API or code.