Vibecoding means living in Markdown: CLAUDE.md, specs, plans, READMEs. Splat puts the source and a live preview side by side, both editable, and turns every preview edit into the smallest change to the Markdown, so diffs stay clean. Mermaid, LaTeX and Obsidian syntax render offline; export to PDF, HTML and Word. Native, written in Rust, free and open source.
