Tiptap

Tiptap is a headless, framework-agnostic rich text editor framework for developers and teams building customizable WYSIWYG editing into web applications, built as a wrapper around ProseMirror.

Key capabilities include:

• A headless editor core that lets product teams design their own UI and editor behavior via a large extension system (100+ extensions)
• Advanced editing features via extensions, including tables with actions like add, move, resize, merge, and duplicate
• Paid real-time collaboration, including live cursors and carets, offline editing, and sync
• Paid add-ons such as AI Toolkit for building document-editing agents and Comments for inline and document-level discussions

Pricing: Freemium, the core editor is open source (MIT); paid features include: Start ($49/month), Team ($149/month), and Business ($999/month).

Notable for combining an open-source, extendable editor core with optional platform add-ons (collaboration, comments, document tooling), and for adoption by organizations such as The New York Times, The Guardian, and Atlassian.