#redline

SnapDiff

jcrengifoa

Visually compare uncommitted image changes against HEAD — swipe, opacity, onion skin, and redline diff.

annotron — Markdown preview, Mermaid diagrams & point-and-click review

hueanmy

Preview Markdown & HTML with Mermaid diagrams (flowchart, sequence, class, ER, C4, gantt), outline navigation, and point-and-click review. A human-in-the-loop layer for AI coding agents (Claude Code, Cursor): comment on any element or text, auto-apply feedback via the integrated agent loop, sync edi