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What is Tangent Notes?
Tangent Notes is a free, open-source note-taking app for Mac, Windows and Linux, built around the idea that notes should branch and connect rather than sit in a flat list. Per its own description on Tangent Notes, it lets you link to existing notes or create new ones as you write, and it visualises the path of your thinking with sliding panels and a branching map that grows as you type. Notes are stored as plain Markdown files locally on your device, readable and editable in any text editor, and the app is released under the Apache 2.0 licence.
Who it suits
- Writers and researchers who think associatively. If you tend to jump from one idea to a related one mid-sentence, the branching map is meant to keep that trail visible so you can retrace and extend it.
- People who want file ownership. Because notes are local Markdown, you can open them in Obsidian, VS Code, or any editor, sync them with your own tools, and leave without exporting.
- Open-source-minded users. The Apache 2.0 licence and public source code matter if you audit or self-host your tools.
Trade-offs to weigh
The branching, map-based model rewards exploration but can feel unfamiliar if you want a simple linear notebook; expect a short adjustment period. Local Markdown files give you portability but leave backup, sync and mobile access to you rather than bundling them. And as a smaller open-source project, it may have fewer integrations and a slower feature cadence than established commercial apps.
A concrete next step
Download the build for your platform, create a test vault of a dozen Markdown files, and spend one session writing a real project note while branching off into linked sub-notes. If the map helps you find your way back, the model fits; if you keep wishing for a plain list, a linear Markdown editor will serve you better.
How does Tangent Notes help me write connected, non-linear notes on Mac, Windows, or Linux?
Tangent Notes is built around the idea that notes should branch rather than sit in a flat list. On Mac, Windows, or Linux, you write in sliding panels and can link to existing notes or spin off a new one mid-thought, so a tangent becomes a connected note instead of a lost idea. A branching map builds itself as you write, which gives you a visual record of where you are and how you got there.
What that means in practice
- Linking while writing: You can create a link to an existing note or start a new one without leaving your current note, which suits research, drafting, and thinking that jumps between topics.
- Sliding panels and a branching map: These are the navigation aids. The panels keep your current context visible, and the map shows the path of your exploration so you can backtrack or follow a thread in another direction.
- Plain markdown files stored locally: Notes live on your device as markdown, readable and editable by any text editor. That matters if you want portability, version control, or to avoid lock-in.
- Open source under Apache 2.0: You can inspect or modify the code, and the app is described as free forever.
Who it fits, and the trade-off
A concrete case: a writer gathering sources for an article opens a main note, links out to a note per source, and branches again when a source raises a side question. The map keeps that sprawl legible. The trade-off is that a branching, panel-based workspace rewards people who think associatively and are willing to learn a less conventional interface; if you mainly want a simple linear document, the structure may feel like overhead. Local markdown files also mean you are responsible for your own backup and sync setup.
As a next step, try one real project: start with a single note, branch three times as questions arise, then use the map to review whether the connections helped you think or just added clutter.
How do Tangent Notes' sliding panels and branching map help me keep track of where I am in my notes?
Tangent Notes uses two complementary navigation aids: sliding panels show the sequence of notes you have moved through, while a branching map draws the links between notes as they are created. Together they answer two different questions—"how did I get here?" and "how does this idea relate to the others?"
What each view is for
| Aid | What it shows | Best used when |
|---|---|---|
| Sliding panels | The path of notes you have opened, in order | You are mid-thought and want to step back to an earlier note without losing your place |
| Branching map | Notes as connected nodes, built automatically as you write | You want the overall shape of a topic and to spot notes that are isolated or over-linked |
The panels suit linear work: drafting, following a chain of argument, or returning to a source note you passed through. The map suits overview work: checking whether a cluster of notes has a missing link, or finding where a new note should attach. The page describes the map as building itself as you write, so the structure reflects your actual linking rather than a folder scheme you maintain separately.
A concrete scenario
Suppose you are researching a decision and start from a note called "Pricing options." You link out to "Competitor pricing," then to "Margin assumptions," then to "Open questions." The sliding panels let you retrace that chain in reverse to re-read the margin note. The map shows that "Open questions" has only one incoming link, which is a signal to connect it to your project index or a related decision note.
Practical trade-offs
- Panels reward depth-first work; the map rewards breadth. If you write long chains, lean on panels. If you accumulate many short notes, lean on the map.
- The map is only as good as your links. A note you never link will sit apart from the rest; the map makes that visible but does not fix it.
- Local Markdown storage keeps this portable. Because notes are plain Markdown files readable by any text editor, the link structure is not locked inside the app. If you later move to another tool, the underlying files remain accessible, though the visual map itself is a feature of this app.
Next step
Pick one project with more than a dozen notes. Open it, use the map to find the three notes with the fewest connections, and add one meaningful link to each. Then use the panels to walk the resulting path end to end—if the sequence reads coherently, your structure is doing its job.
For comparison, other local-first note tools include Obsidian and Logseq.
Where are my Tangent Notes files stored, and can I open them with another text editor?
Yes. Tangent Notes stores your notes as ordinary Markdown files locally on your device, and any text editor can open or edit them. The app's own description emphasizes that "nothing is hidden" and "everything is yours," so you are not locked into a proprietary format or a sync service to read your writing.
What this means in practice
- Local files, not a database. The page describes notes as Markdown files on your device rather than an internal store. That makes them portable: you can copy a folder to another machine, back it up with ordinary file tools, or point a different editor at it.
- Plain Markdown. Because the format is standard Markdown, opening a note in a general-purpose editor shows the raw text, including any
[[links]]or formatting syntax Tangent uses. You will see the content, but not Tangent's sliding panels or branching map—those are the app's own view. - Open source under Apache 2.0. The app's code is public, which matters if you want to verify how files are handled or keep using your notes if the app changes.
The one detail to confirm yourself
The page says files are stored locally but does not state the exact default folder path. After installing, check the app's settings or preferences for its notes directory, or look for a folder such as Documents or a Tangent-specific folder. Once you find it, open one .md file in a text editor like TextEdit, Notepad, or VS Code to confirm you can read and edit it.
A practical check before committing
Write one test note with a link to a second note, then close Tangent and open both files in your usual editor. If the text and links are readable and edits made outside Tangent reappear correctly when you reopen the app, your workflow is safe. This matters most if you plan to edit notes on a phone or share a folder with collaborators—plain files make that easy, but simultaneous edits from two apps can still create conflicting copies, so keep a backup habit.
Is Tangent Notes free, and what license does it use?
Yes. Tangent Notes is free to use and open source under the Apache 2.0 license, according to the product's own site Tangent Notes. The Apache 2.0 license also lets others inspect, modify and redistribute the source code, which matters if you want to verify how the app handles your files or adapt it yourself.
What "free" means in practice here
- No paid tier is described on the page; the site presents the app as "Free Forever."
- Your notes are plain Markdown files stored locally, so you are not locked into a subscription to keep access to your writing.
- It runs on Mac, Windows and Linux, so the same free app covers mixed-OS setups.
A useful next step
If you are weighing it against another notes app, the deciding test is portability: create a few notes, then open the folder in any text editor. Because Tangent works directly with Markdown files, your notes should remain readable and editable outside the app—worth confirming before you commit a large notebook to it.
How do I download and start using Tangent Notes on my computer?
Download Tangent from the official site: Tangent Notes. The page presents a direct "Download Tangent" option and lists Mac, Windows, and Linux as supported platforms, so pick the build for your operating system and install it like any desktop app.
First steps once it's installed
- Create a notes folder you control. Tangent works with local markdown files on your device, so choose a folder location you'll remember and can back up. Because notes are plain markdown, any text editor can open them.
- Write one note, then link a second. The app is built around linking to existing notes and creating new ones as you write. Start with a single idea, then link out to a related note to see how connections form.
- Watch the branching map. Tangent visualizes your thought path with sliding panels and a branching map that builds as you write. Use it to keep track of where you are and where you've been.
- Follow tangents deliberately. The design encourages wandering along a thread of interest rather than forcing a linear outline. That suits brainstorming, research trails, and exploratory writing more than rigid document drafting.
Who this fits
| Your situation | How Tangent's approach helps |
|---|---|
| You think in connected ideas, not outlines | Linking and the branching map mirror associative thinking |
| You want to own your files | Local markdown files readable by any editor |
| You prefer open-source tools | Apache 2.0 license, source available on GitHub |
| You need strict document formatting | A plain-markdown, link-first tool may feel loose for structured reports |
A practical next step: before importing years of notes, create a small test folder with five or six linked notes. If the map and panel navigation match how you like to move between ideas, expand from there; if you find yourself wanting a conventional folder tree, that's a signal to keep Tangent for exploratory work only.
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