Confluence, Read The Docs, Nuclino, Sphinx, Wiki.js, ReadMe, Walling, Document360, Slite, Fibery, Slate API Docs Generator, Widget-Board, DocsApp, Notea, Docuie, HostMyDocs, Postkit, SimpleDocServer, EasyDocs, Doctant, Waybook, DeveloperHub are some alternatives to Docsie.