Show HN: I built a native macOS Markdown viewer 100% with AI coding agents
A new native Markdown viewer for macOS has been developed entirely by AI coding agents. The application supports GitHub-flavored Markdown and offers features such as instant load times and a minimal binary size. Users can install it easily and utilize various functionalities like rendering diagrams and math equations.
- ▪The Markdown Viewer is designed to render GitHub-flavored and Obsidian-style Markdown as HTML in a native window.
- ▪It includes features like task lists, strikethrough, and support for diagrams using Mermaid.js.
- ▪The app was created without human intervention, with all coding done by AI agents.
2 outlets in our directory ran this story, first to last over 7 hours. All of the coverage we found sits in one bucket: centre. That one-sidedness is itself worth noticing.
Hacker News (AI / LLM) files mainly under ai. We currently carry 2,530 of its stories.
Story provenance
Source · retrieval · rights · ranking — open for full record
inspect →
Attribution is not the same as permission. This drawer separates discovery metadata, excerpts, WeSearch-generated summaries, reuse status, and whether the publisher receives the visit. Nothing here claims a legal grant the publisher has not made.
Record
| Original publisher | GitHub |
| Canonical URL | https://github.com/rajatarya/mdviewer |
| Publication time | Tue, 19 May 2026 21:57:19 +0000 |
| Retrieval time | 2026-05-19T22:04:58.349Z |
| Last seen | 2026-05-19T22:04:58.349Z |
| Headline source | Publisher (no WeSearch rewrite) |
| Excerpt source | publisher body |
| Excerpt method | First ~120 words (~800 chars) of extracted publisher body, fair-use limited. |
| Summary | WeSearch · cerebras-chat (WeSearch summarizer) |
| Summary source text | contentText |
| Citation coverage | Summary is a WeSearch-generated derivative; primary citation is the original publisher URL. |
| Cluster | X5J517oP3hzA · 2 stories |
| Cluster logic | Grouped by semantic title/content similarity across sources within a rolling window. Same-publisher template collisions are excluded from coverage comparison. |
| Ranking reason | Story pages are not engagement-ranked. Hub feeds use recency, with optional source-diversified chronological ordering (cap consecutive stories per source). No personalized ranking. |
| Publisher visit | Yes — open original |
| Substitutes article? | No — link-out required for full text |
Rights status (four layers)
WeSearch handling by dimension
| Indexing | May the item be indexed (stored, ranked, made findable)? | Allowed |
| Snippet | May a short excerpt of the publisher's text be shown? | Allowed |
| AI summary | May WeSearch generate its own short summary of the article? | Limited |
| Retrieval / RAG | May the content be exposed for third-party retrieval-augmented generation? | Not asserted |
| Model training | May the content be used to train AI models? | Not asserted |
| Commercial reuse | May the content be reused commercially? | Not permitted |
Basis: Derived from the published RSS/Atom feed. Contact: [email protected]. Reviewed: 2026-07-24.
Opening excerpt (first ~120 words) tap to expand
Markdown Viewer A fast, lightweight native Markdown viewer for macOS Render GitHub-flavored and Obsidian-style Markdown as beautiful HTML in a native window — with instant load time and a tiny binary footprint. Features · Installation · Usage · Development · Contributing · Colophon Features Category Supported GitHub Flavored Markdown Tables, task lists, strikethrough, autolinks, fenced code blocks Obsidian-style Wikilinks [[Page|label]], emoji shortcodes :rocket:, callouts > [!NOTE] Math Inline $E = mc^2$ and display $$\int_0^\infty$$ via KaTeX Diagrams Mermaid code blocks rendered with Mermaid.js Frontmatter Title, description, tags, status badges, and full metadata box Security All HTML sanitized via ammonia — XSS-safe by default Performance Zero webview overhead, instant load, ~few MB…
Excerpt limited to ~120 words for fair-use compliance. The full article is at GitHub.