Docsmith adds snapshot-based versioning to any ActiveRecord model with zero system dependencies. • Full content snapshots (HTML, Markdown, JSON) for instant rollbacks • Format-aware diff engine: word-level diffs for Markdown, tag-atomic diffs for HTML • Document-level and range-anchored comments with threading and version migration • Per-class configuration, debounced auto-save, lifecycle events, and a clean API Perfect for wikis, CMS pages, API specs, legal documents, or any content that needs an audit trail and inline collaboration.