PeekMark

PeekMark is a native, local-first Markdown viewer and workspace for macOS. Select a Markdown file in Finder and press Space for a rich Quick Look preview with GFM, syntax highlighting, Mermaid, Math/LaTeX, frontmatter, tables of contents, anchors, and wikilinks. The open-source Community edition includes Finder Quick Look, document preview, and Scratchpad. PeekMark Pro adds local folder workspaces, advanced full-text search, backlinks, a knowledge graph, themes, and HTML, PDF, and DOCX export. Markdown rendering and workspace indexing stay on your Mac. No account, ads, document uploads, or subscription. Community is licensed under AGPL-3.0; Pro features are proprietary.

Features

Finder Quick Look preview for Markdown
GFM, syntax highlighting, Mermaid, and Math/LaTeX
Local Markdown workspaces with advanced full-text search
Backlinks and interactive knowledge graph
Custom themes and HTML, PDF, and DOCX export
Local-first, ad-free, and no account required

Project Samples

PeekMark Pro workspace with local Markdown documents, search, backlinks, and knowledge graph.

Advanced full-text search across titles, tags, paths, and Markdown content.

Interactive knowledge graph visualizing connections between Markdown notes.

Live Markdown editing and preview with GFM, syntax highlighting, Mermaid, and Math/LaTeX.

Rich Markdown rendering with headings, tables, code blocks, links, and document navigation.

Project Activity

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License

Affero GNU Public License

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Additional Project Details

Operating Systems

Mac

Languages

English

Intended Audience

Developers, End Users/Desktop

User Interface

Cocoa (MacOS X)

Programming Language

Swift

Related Categories

Swift Text Editors, Swift Desktop Environment Software, Swift Documentation Software

Registered

2026-07-23

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