A fast, native desktop reader for Open Knowledge Format bundles. Point it at a folder to explore concepts, follow links, and see the structure of what you know.
OKF Viewer reads two open, vendor-neutral formats. Here's the short version.
Google's open spec for packaging knowledge as plain markdown files with YAML frontmatter, organized into a portable bundle. No SDK, no database, no lock-in. Table docs, runbooks, API references, concept graphs: anything an agent or a human should be able to read.
Read the OKF spec →A profile of OKF for design systems: it adds machine-readable design tokens and runnable HTML/CSS examples, so an agent produces UI that matches your system. This very site was built from an ODSF bundle, which OKF Viewer can open and preview.
Read the ODSF spec →A focused reader for the Open Knowledge Format, the vendor-neutral way to package agent-readable knowledge.
Explore concepts, links, and structure visually, not a wall of files: a force-directed graph, a zoomable treemap, a sunburst, or nested circles. Your pick is remembered.
Reads Open Knowledge Format & ODSF bundles from any producer: a local folder, or straight from a GitHub URL.
Ctrl+click opens a concept in a new tab with its own history. Drag to reorder, or tear one off into its own window.
Hover any concept link for an instant preview of its type, title, and first lines, before deciding it's worth a tab.
An overview page to orient, faceted queries like type:Table degree>5, and a lineage panel that traces dependencies across hops.
A Tauri desktop app for Windows, macOS, and Linux. Small, quick, no browser bloat.
Validation surfaces issues inline; a tolerant reader never rejects a sloppy bundle.
Renders ODSF design tokens and live HTML/CSS examples right in the reader.
The whole extended markdown set: highlighted code, math, Mermaid diagrams, footnotes, task lists, emoji, embedded HTML. Plus zoomable images, live reload, and keyboard-first navigation.
The same bundle as a network, a treemap, a sunburst, or nested circles. Switch with one click, and it opens that way next time.
The force-directed network: what cites what, hubs and clusters at a glance. Double-click a node to expand its neighborhood.
Nested rectangles sized by how much is written: what's big, what's inside what. Click a group to drill in.
The whole hierarchy as concentric rings. Click a sector to re-root on it; the center takes you back up.
Groups within groups as nested circles, with a smooth zoom as you drill down and out.
A distraction-free reader with a live index, syntax-highlighted code, zoomable images, and the relationship panel. Hover a link to peek at its target, open side quests in tabs that keep their own back/forward history, and undock a tab into its own window for a second monitor.
Open an ODSF bundle and OKF Viewer renders its design tokens and live HTML/CSS examples inline. Here it's reading this very site's design system, previewing the hero it was built from.
Free and open source. Pick your platform.
v0.2.7 · unsigned for now (your OS may warn on first launch) · all releases · macOS: build from source