Quillt

Quillt is a software platform designed to support collaborative writing, annotation, and publishing. It combines a block-based editor with a revision-controlled workflow, enabling multiple authors to draft, comment, and revise content in parallel while preserving a complete history of changes. The project emphasizes interoperability and exportability, with built-in support for multiple export formats and metadata schemas.

Quillt began as an open-source project developed by a community of writers and developers in the early 2020s. The initial release focused on real-time collaboration and fine-grained permissions, with subsequent releases adding structured content blocks, citation management, and extensible plugins. The project is maintained by a community-driven steering group and operates under an open-source license.

Core concepts include block-based content, structured metadata, and reversible versioning. Documents are composed of discrete blocks (text, images, quotes, code, notes), which can be rearranged and nested. The system tracks provenance through a commit-like history and supports branching for alternative drafts. It provides granular access controls, per-block annotations, inline comments, and cross-document linking. Output formats include HTML, Markdown, PDF, and ePub, with options for custom templates.

Quillt has been adopted by academic researchers, curriculum developers, and freelance editors to assemble reports, books, and course materials. Its emphasis on transparency of edits and export portability makes it suitable for collaborative workflows that require traceable authorship and easy distribution. Some critics note that the learning curve and performance can be challenging for very large documents.

Related concepts include wiki-style collaboration, version control for documents, and other content platforms that support real-time editing and multi-author workflows.