What is Tana Outliner?

Tana Outliner is an AI-powered outliner editor that helps you capture, connect, and structure information in a networked knowledge graph.

What is a Reference in Tana Outliner?

A reference in Tana Outliner is a mirror copy of a node. It's a node that lives in many places all at once. If you edit one of them, the change reflects in all copies, everywhere.

References are handy because they make digital objects work a bit more like reality. Example: Spinach doesn't only belong in your pantry, it also belongs as an ingredient in your quiche #recipe, an item at a local #vendor, or as a source of iron #nutrient.

What's really helpful here is that all references to Spinach refer to the same node, so the node Spinach becomes an index for all things spinach in your life, whether it be in recipes, found in shops, or a nutrient source. As you encounter spinach more in your life and connect it to more things in your graph, your knowledge about spinach will just keep on growing. Just like knowledge does in real life.

Here's a comparison between hashtags and supertags:

Primary function. Hashtags identify keywords and trends that are relevant to a piece of content. Supertags identify items and entries in one's data or knowledge-base.
Placement. Hashtags can appear anywhere in the content. Supertags apply to the whole content (node), always appearing at the end.
Search. Hashtags find all content tagged with that hashtag across the platform. Supertags work similarly.
Value. Hashtags connect users to the broader conversation across the platform. Supertags connect users with their own content, improving knowledge management and retrieval.
Shorthand. Hashtags: "This content is related to X." Supertags: "This content is an X."

Using supertags this way is a good starting point for getting to know them. Once you become more familiar, it's not a problem if you want to break the rules and use supertags like hashtags, as long as you know what the tradeoffs are and why you are doing this.

Does Tana Outliner have backlinks?

Yes, Tana Outliner has backlinks. We call them References, and there is a Reference section at the bottom of every node that shows all backlinks to this node.

It is also possible to create a search node using the operator LINKS TO that captures backlinks, which you can customize to scope and filter in different ways.

Do I need to understand graph theory to use Tana Outliner?

Nope. You work in a familiar outline: bullets, indentation, keyboard shortcuts. Tana Outliner handles the graph behind the scenes, turning your writing into a connected structure you (and AI) can search, query, and reuse. No query languages required.

Do I need to understand knowledge graphs to use Tana Outliner?

No. You work in a familiar outline with bullets and indentation. Tana Outliner builds the knowledge graph behind the scenes so you and AI can search, filter, and reuse your information later. You get the benefits without the complexity.

How is a knowledge graph different from folders or a database?

Folders organize files in a tree; one place per thing. Databases organize rows in tables; rigid and separate. A knowledge graph organizes things and their connections, so the same piece of information can link to many others without duplication. It's closer to how your brain actually works.

What's the difference between a knowledge graph and linked notes?

Linked notes (like [[backlinks]] in Roam or Obsidian) show that two pages reference each other. That's useful, but limited. A knowledge graph adds types and relationships: This node is a #person, that node is a #project, and the connection between them means "responsible for." Types let you query, filter, and reason over your knowledge, not just click around.

Is Tana Outliner a graph database?

Under the hood, yes. Tana Outliner uses a graph-structured model. What you see however is a thinking and productivity tool, not a raw database. You don't write traditional queries; you use search, views, and AI to work with your graph naturally.

Why do knowledge graphs work better with AI?

Documents are flat. AI sees a wall of text and has to guess at relationships. Knowledge graphs are structured. AI can follow explicit connections, do multi-hop reasoning ("find all tasks for projects owned by this person"), and ground its answers in real relationships. Less hallucination, more accuracy.

How is Tana Outliner different from Notion, Obsidian, or Roam for PKM?

Traditional note apps store documents or pages. Tana Outliner stores connected nodes in a graph. Supertags and fields let you treat the same information as a note, a task, or a project depending on context. Add AI that actually understands your graph, and your PKM stops being a passive archive.

How is Tana Outliner different from Notion, Todoist, or Obsidian?

Todoist is great for task lists, Obsidian for markdown notes, Notion for databases and pages. Tana Outliner combines an outline editor, knowledge graph, and AI in one app. Your notes, tasks, projects, and people are all connected and viewable in different ways without duplicating data. One tool that does what used to take three.

Can Tana Outliner really be my whole PKM system?

Yes. Tana Outliner is designed to be a complete personal knowledge management system: capture information, connect it with supertags and links, resurface it across projects, tasks, and writing. Many people have moved their entire PKM from Notion, Roam, Obsidian, Evernote or others into the app.

Does Tana Outliner support Zettelkasten, GTD, and PARA?

All three, and you can mix them. Tana Outliner doesn't lock you into one framework. Run a pure Zettelkasten, a classic GTD setup, a PARA-based second brain, or a hybrid that fits how you actually work. Templates and supertags make it easy to adapt.

How hard is it to get started with PKM in Tana Outliner?

Start simple: A daily note and one or two supertags (#note, #task). That's it. You can layer on fields, views, and frameworks gradually. There are starter templates and community setups that help you skip the phase of "designing the perfect system".

Is Tana Outliner overkill if I just want to be more organized?

Not at all. You can start with a single daily note and one task tag. Tana Outliner scales from "simple list of things to do today" to a full life operating system without forcing complexity on you. Start simple. Add structure when you actually need it.

Is Tana Outliner too complex for PKM?

Tana Outliner can be as simple or as powerful as you want. Some people use it as a straightforward outliner with a few tags. Others build elaborate systems with custom views and AI workflows. The complexity is opt-in, the basics are just bullets and links.