Note Taking That Thinks in Connections
Folders are where notes go to be forgotten. Onyx pairs a powerful rich text editor with a knowledge graph, so every idea you capture stays connected to the thinking — and the tasks — around it.
Start Taking Notes FreeA serious editor with a second brain behind it
- Full rich text editor — formatting, tables, task lists, and links
- Code blocks with syntax highlighting
- File attachments with previews
- Folder hierarchy, pinning, and archiving
- Knowledge graph: a Constellation Map of how notes link together
- Spatial Board for arranging ideas in 2D space
- Link types — related, parent, reference — and topic clustering
Notes next to tasks, where they belong
Notes create actions: a meeting produces follow-ups, research produces next steps, journaling produces intentions. When your note taking app and your task tracker are separate products, that handoff is where things fall through. In Onyx they share one workspace, one search, and one system of priorities.
And for the things you want to keep permanently, the Atrium memory system turns notes into spaced-repetition reviews — so what you capture, you actually retain. Read more on why notes and tasks belong in one app.
Frequently Asked Questions
What is a knowledge graph in a note taking app?
A knowledge graph visualizes your notes as a network: each note is a node, and links between notes are edges. Instead of hunting through folders, you can see clusters of related thinking and navigate by association — the way memory actually works. Onyx calls this view the Constellation Map.
How does Onyx compare to Obsidian or Notion for notes?
Obsidian is a superb dedicated notes tool, and Notion is a team workspace that also does notes. Onyx's difference is integration for individuals: your notes live directly beside your tasks, kanban boards, and goals in one app, so meeting notes can become tasks and research can attach to goals without copying anything between tools.
Can I organize notes into folders?
Yes — notes support a full folder hierarchy, plus pinning for quick access and archiving to keep your workspace clean. The knowledge graph works alongside folders, not instead of them.
Is the note editor good for code and technical notes?
Yes. The editor supports code blocks with syntax highlighting, tables, and file attachments, which makes it comfortable for technical notes, snippets, and documentation.
Give your ideas a home that remembers
Rich notes, knowledge graphs, and tasks in one free app.