Binder.

Binder is a full note-taking and AI integrated HTML display suite that combines the best of both worlds. Originally a ringbinder shell for self-contained HTML files, it now also incorporates powerful note-taking capabilities with hierarchical wiki pages and nested subpages. The persistent AI panel has full context awareness of your current content and can perform CRUD operations, access your files, and assist with content creation. Built on TipTap, it features a powerful WYSIWYG markdown editor with support for tables, rich text formatting, and collaborative AI assistance. Perfect for storing and serving HTML posters, timetables, infographics, and interactive experiences—whether generated by LLMs or created manually.