Press release · Coluracetam
kageroumado Releases Coluracetam, a Native Markdown Reader and Quick Look Renderer for Mac
Coluracetam is a native macOS Markdown reader with a live side-by-side editor and rendered view, Finder Quick Look previews and PDF/HTML export. Free and open source, also available on the Mac App Store.
Published · Updated . Features and availability describe the product at the update date.
On June 29, 2026, kageroumado released Coluracetam, a native macOS application for reading and writing Markdown. The app arrived on the Mac App Store on July 15, 2026. Coluracetam opens and saves plain .md and .markdown files and shows a monospace source editor beside the rendered page, updating live as the user types.
Coluracetam also renders Markdown in Finder: pressing the space bar on a Markdown file shows a fully rendered Quick Look preview, and Finder thumbnails display the rendered document. Rendered documents can be exported to PDF or HTML.
Coluracetam keeps no database, opens only Markdown files, and has no accounts or settings to configure.
Key features
- Live side-by-side Markdown source and rendered view
- Rendered Quick Look previews and thumbnails in Finder
- Export to PDF and HTML
- Works directly on plain .md and .markdown files
How it compares
| App | Price | License | Quick Look | Editing |
|---|---|---|---|---|
| Coluracetam | Free; optional Mac App Store edition US$4.99 | MIT | Rendered preview plus Finder thumbnails | Live split editor |
| QLMarkdown | Free | GPL-3.0 | Rendered preview | Quick Look only; no editor |
| Marked 3 | US$49.99/year or US$89.99 permanent | Proprietary | Separate app, Marked QL, US$9.99 | Previewer; you write in your own editor |
| MarkEdit | Free | MIT | Rendered with the MarkEdit-preview extension (1.33.0+) | Markdown source editor |
| MacDown 3000 | Free | MIT | Extension since 3000.0.7 | Editor with live preview |
| Typora | US$14.99; 15-day trial | Proprietary | Not provided | Live preview editor |
Availability
Coluracetam is available as a free download from kagerou.glass/coluracetam and GitHub, and on the Mac App Store for US$4.99. It requires macOS 26 Tahoe or later. The source code is published on GitHub under the MIT License. More information is available at kagerou.glass/coluracetam.
About kageroumado
I'm Mado Kagerou, publishing as kageroumado: an independent researcher and expert Swift engineer with more than ten years of software development experience. As a founder and technical lead, I take projects from architecture through release. My research interests center on computational pharmacology, computational neuroscience and AI safety. My engineering specialties include Apple platform internals, reverse engineering, GPU rendering and local model training.
Research, engineering work and leadership experience
Media contact
kageroumado · [email protected] · kagerou.glass