Choose Obsidian for a private local Markdown vault, linked thinking, and a large plugin ecosystem. Choose Doco when multiple people and agents must share one live, permissioned document state and perform version-protected block writes.
The products overlap, but their centers of gravity are different. Start with the source of truth and the people or agents who must maintain it.
| Dimension | Doco | Obsidian |
|---|---|---|
| Primary job | Shared human-agent document workspace | Local-first personal knowledge vault |
| Data ownership | MIT service, self-hosted option, open exports | Markdown files stored in a local folder |
| Human collaboration | Real-time Yjs collaboration and permissions | Primarily individual editing; sync is a separate layer |
| Agent access | MCP/CLI/API with stable blocks and versions | Plugins and file access; no single built-in versioned agent-write contract |
| Content model | Structured rich-text documents with Markdown exchange | Plain Markdown plus Obsidian metadata and plugin syntax |
| Best fit | Teams running maintained, agent-editable knowledge | Individuals who prioritize local files, links and customization |
Obsidian is stronger for local file ownership, personal linked notes, graph exploration, themes, and its broad plugin ecosystem. Any text editor or file tool can work with the same Markdown vault.
Doco supplies the collaboration service Obsidian intentionally does not center: shared permissions, live multiplayer documents, stable block identity, scoped agent APIs, and explicit concurrency protection.
Migration is low to medium effort because Obsidian notes are Markdown files. Standard headings, lists, links, and images transfer well; wikilinks, embeds, Dataview queries, Canvas files, and plugin-specific front matter require review.
Copy the vault and keep the original untouched as the rollback source.
Import a representative folder of Markdown and assets into a Doco knowledge base.
Audit wikilinks, embeds, tags, front matter, and plugin-specific blocks; convert unsupported behavior explicitly.
Test search, block citations, export, and one concurrent human-agent edit before migrating the rest.
Run a representative trial first. Keep the original export until links, attachments, permissions, tables, and a restore have all been verified.
Obsidian is the better personal local Markdown environment. Doco is the better fit when the knowledge base is a shared operational system for people and agents rather than a folder synchronized between devices.
Doco imports Markdown, so ordinary notes transfer directly. Obsidian-specific wikilinks, Canvas data, Dataview queries, and plugin syntax need a migration review.
Doco keeps browser IndexedDB as the local editing store and can work through temporary disconnection, but its collaborative model also includes a server. Obsidian's canonical notes are local files.
Obsidian by a wide margin. Doco's differentiator is not plugin breadth; it is one structured, live document model with safe external agent writes.