Your Notes.
Your Browser.
Your AI.
All Connected.
Nexus brings your notes, browser, and AI together so you can research, write, and ask questions without switching apps or constantly uploading information.
Every note is saved locally, connected through the knowledge graph, and automatically available to your AI.
No uploads. No rebuilding context. Just open Nexus and keep working. Your workspace already knows what matters.
One window
Three tools that were built to sit next to each other
Most note apps stop at notes. Nexus keeps a real browser and an assistant in the same window, so context never has to be copy-pasted between four different apps.
01 — Notes
Notes that build themselves into a knowledge graph
Write naturally and let Nexus connect the dots. Add #tags as you write, and Nexus automatically turns those relationships into a real, navigable knowledge graph. Your notes, links, and tags become the structure, revealing connections between ideas as your knowledge grows. Explore related concepts, follow ideas, and see how everything fits together — all while your work stays saved locally with automatic version history, so nothing gets lost.
02 — Browser
A real native private browser, built into Nexus
Browse the web without leaving a history behind. Nexus opens websites in native browser tabs, but unlike a traditional browser, it doesn't keep a persistent record of your browsing activity. No browsing history, or a persistent browsing trail. When you close your session, there's nothing waiting in Nexus for someone else to find later. Your browsing stays temporary instead of becoming another permanent record on your device.
03 — Assistant
An assistant that already knows what you're reading
Ask a question and Nexus searches your notes on-device, finds the relevant context, and combines it with the page open in your Browser tab. No uploading files. No copying and pasting. No explaining your context from scratch. Because your notes and research are already connected, the Assistant can answer questions using what you've written and what you're reading right now. Your context is already there. Just ask.
Details
The parts you notice after day one
Semantic search, on-device
A small embedding model runs locally to find notes by meaning, not just shared words — no API call, nothing sent anywhere to search your own writing.
Version history done right
Nexus quietly snapshots a note as you edit it, so an accidental rewrite or a bad find-and-replace is always one click from undone.
Deleting is reversible by default
A deleted note moves to Trash, not the void. Everything about it — links, tags, history — stays intact until you empty it yourself or restore it.
A command palette for everything
⌘K jumps to any note, creates a folder, or switches tabs by typing a few letters — built for keeping both hands on the keyboard.
Your data, in formats you can leave with
Export every note as plain Markdown, or back up the whole database to a single file. Nothing here is locked behind a proprietary format.
Secrets live in your OS keychain
An API key you add is stored through your system's own credential store, never in a browser-readable file, and is never persisted anywhere else.
Four themes, one CSS variable away
Darkness, Dusk, Daylight, and Dawn are built from the same token system — pick the one that matches how you want the room to feel.
Pasting content awareness
The editor understands what you paste and formats it accordingly — code becomes code blocks, structured text keeps its shape, and everything else gets the formatting it needs.
Under the hood
From a typed link to a graph edge
This is the actual sequence, not a simplification — it's the same four steps every time you type something.
- 01
Write a link
Type anywhere in a note, the same way you'd write a normal sentence.
- 02
Nexus resolves it
On automatic save, the title is matched against your other notes — no folder structure or manual linking needed.
- 03
An edge is stored
The connection is written to a local link table, in both directions: backlinks and outgoing links.
- 04
It shows up in the graph
Open the Graph tab and every connected note is already there, sized by how many links it holds.
Appearance
Four themes, switched instantly
Every color in Nexus is a CSS variable, so switching themes is instant and never requires a restart.
Darkness
The original near-black look Nexus always had.
Dusk
Deep navy-blue instead of neutral black, cooler overall.
Daylight
White and gray — a proper light mode.
Dawn
Warm charcoal with an amber accent instead of blue.
Privacy
Local First - Private by Default
Here's what it actually means for Nexus, plainly, so you can judge it for yourself rather than take our word for it.
Notes live in a local SQLite file on your disk — there's no Nexus server to sync them to.
No account, no login, no usage tracking baked into the app.
Semantic search runs through a small model loaded in-app via WebAssembly — nothing about your notes leaves the device to search them.
Ask the assistant a question, and only the relevant note excerpts (plus the open pages, if you ask about them) are sent to the AI provider — never your whole vault.
An API key you add is stored in your operating system's own credential store, not in a browser-readable file.
Get Nexus
One app. Three platforms. Everything connected.
Free to try, nothing to configure on a server somewhere. Download Nexus and create your first note in under a minute.
Public builds publish on github.com/getnexusapp as they go out.
// what's inside
runtime = Tauri + Rust
ui = React + TypeScript
storage = SQLite, on disk storage
search = Local embedding model
assistant = Your own API key