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Caspian, anchor your notes to anything

Caspian is a local-first knowledge base that lets you anchor plain Markdown notes to anything: a diagram, a map, a floor plan, a 3D model, over a vault you own.

Caspian, anchor your notes to anything screenshot, image 1

Overview

AI summary

Caspian is a local-first knowledge base that allows users to anchor plain Markdown notes to various visual elements such as diagrams, maps, floor plans, and 3D models, all stored in a user-owned vault.

Sources behind this listingSee source links, recorded dates and owner corrections.

Observed facts come from public pages. Founder-edited facts are supplied by the verified owner. AI-inferred facts are model interpretations; derived facts are calculated from other data. A source link lets you check the current page. It does not guarantee the fact is still current.

Dates show when a record was saved. Some older records use the listing’s update date; they are not proof of a fresh check. Missing source records are shown explicitly.

TaglineCaspian is a local-first knowledge base that lets you anchor plain Markdown notes to anything: a diagram, a map, a floor plan, a 3D model, over a vault you own.
ObservedRecorded Source: caspian.md
DescriptionCaspian is a local-first knowledge base that lets you anchor plain Markdown notes to anything: a diagram, a map, a floor plan, a 3D model, over a vault you own.
ObservedRecorded Source: caspian.md
Free planNot stated
Source not recordedDate not recordedSource link unavailable
Free trialNot stated
Source not recordedDate not recordedSource link unavailable
IntegrationsGitHub
ObservedRecorded Source: caspian.md
SummaryCaspian is a local-first knowledge base that allows users to anchor plain Markdown notes to various visual elements such as diagrams, maps, floor plans, and 3D models, all store...
AI-inferredRecorded Source link unavailable

Who Is It For

Best for

Individuals or small teams looking for a flexible note-taking solution that integrates visual elements without relying on cloud services.

Not for

Users who prefer a standardized interface or require extensive collaboration features, as Caspian focuses on individual use and local storage.

Strengths & Weaknesses

Biggest strength

The ability to link Markdown notes to diverse visual canvases, enabling a unique and personalized organization of information.

Biggest weakness

Limited integration options beyond GitHub, which may restrict users looking for broader connectivity with other tools or platforms. (AI-inferred; may be outdated. Founders can correct this)

Classification

Likely competitors
NotionObsidianEvernoteMicrosoft OneNote

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How we sourced this: Observed fields () were crawled from https://caspian.md/ when recorded. Source links and dates are available above. AI-inferred fields () were generated by gpt-4o-mini and are always labelled, never presented as measured fact. Last updated: 9 September 2026. Site availability checked: 6 September 2026. Is this your tool? Claim it to edit and get a do-follow badge.