Foam is unclaimed —

Foam

Your knowledge graph. For you and your AI.·foambubble.github.io

Free plan · Open source See pricing ↓

Foam is a tool that turns a plain Markdown knowledge base into a queryable graph and a publishable website, working natively inside VS Code. It provides wikilinks, backlinks, block references, embeds, daily notes, templates and a graph visualization for organizing notes stored as local .md files. It also exposes the notes graph to AI agents (via foam-mcp) so tools like Claude Code and Cursor can traverse links, tags and backlinks rather than just search flat text. Foam is open source and MIT licensed, with no cloud service or subscription required.

What it's for

Building a personal knowledge graph from Markdown notesLinking notes with wikilinks and backlinksVisualizing knowledge base as a graphCreating daily journal notes from a templateQuerying notes programmatically via foam-query or CLIGiving AI agents structured access to a knowledge graph via foam-mcpPublishing a knowledge base as a website

Features 15

Automatic link updates on note rename
Backlinks showing notes linking to current note
Block-level references
Daily notes created from a template
Embeds/transclusion of note content
foam-cli for terminal search, inspect and management
foam-mcp for AI agent graph traversal (MCP-compatible)
foam-query for programmatic graph queries
Graph visualization of the knowledge base
Inline and reference-style footnotes
Inline tags for organizing notes
Reusable templates for meetings, projects, people, etc.
Smart Folders (saved queries as filtered views)
VS Code native definitions, references, syntax highlighting, peek and diagnostics
Wikilinks (double-bracket note linking)

At a glance

free tieropen sourceAPI

TypePlugin / add-on

DeploymentInstalled (local)

Fordevelopers, researchers, writers

Integrations

iCloudClaude CodeVS CodeGitDropboxGitHubCursorDiscord

Pricing

Foam is described as free, open source, and MIT-licensed with no subscriptions or vendor lock-in.

FoamFree

No subscriptions, no vendor lock-in, no cloud service.