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 ready for your AI to draw on when you ask.
No manual 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
Nexus lets you open websites in native browser tabs without creating a permanent record of your browsing activity within the app. Browse on your own terms, close your session, and leave fewer traces behind while enjoying a cleaner, more private experience. No unnecessary logs. No clutter. Just a seamless, privacy-focused browsing experience designed to give you greater control over your digital life with complete freedom.
03 — Assistant
An assistant that already knows what you're reading
Ask a question, and Nexus finds the relevant context from your notes on-device, then, with tab awareness enabled, brings in what you're reading in the Browser too. No uploading files, no copying and pasting, and no need to reconstruct your thinking from scratch. The Assistant connects your research with the page in front of you, so you can move from reading to understanding without breaking your flow. Only relevant excerpts are sent to Nexus Cloud.
Details
The parts you notice after day one
A live rich-text editor
Bold looks bold, headings look like headings. Tables, task lists, images (paste or drag in) and syntax-highlighted code blocks, with pasted code detected automatically.
Links with autocomplete
Type [[ to link notes. Backlinks and links-to show under every note, and a link to a note that does not exist yet appears as a dashed pill.
Tags in the sidebar
Type #word anywhere. Tags appear in the sidebar with counts and filter your notes in one click.
A knowledge graph
Solid lines for links, dashed lines for plain mentions, colored by folder. Drag, zoom, and click any node to open it.
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.
Related notes
On-device search surfaces notes that are similar in meaning, even if you never linked them.
Per-note AI privacy
Flip any note to AI: off and it is never sent to the Assistant. Notes stay yours, one switch at a time.
A built-in browser
Up to 8 live tabs, bookmarks, downloads, and clear HTTPS / not-secure indicators, right next to your notes.
A conflict watcher
Optionally checks open browser tabs against your notes for factual conflicts, using a model that runs on your device.
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
Ctrl + 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. Always yours.
Export your notes as PDFs, download your workspace as a Markdown ZIP file, or create a .nexus backup you can fully restore anytime. Your data stays portable, accessible, and yours.
Safe, signed updates
Every update is verified before it installs, and Nexus copies your database to a backup folder before the first launch on each new version.
Secrets live in your OS keychain
Your Nexus Cloud API key is stored through your system's own credential store, never in a browser-readable file. The server only keeps a hashed copy.
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.
Under the hood
From a typed link to a graph edge
Plain-text syntax. No plugins, no setup. Here is exactly what you type and what Nexus does with it.
- 01
Link notes with brackets
Type [[ and Nexus suggests your notes. Pick one and it becomes a clickable link. Linking to a note that doesn't exist yet shows a dashed pill.
See also [[Recipe Ideas]] for this week. - 02
Group with #tags
A # followed by a word becomes a tag the moment you press space. Tags show up in the sidebar, with counts, and filter your notes in one click.
Long days, late nights #work #house-party - 03
Or just mention a title
No brackets needed. Mention another note's title in normal writing and Nexus draws a softer, dashed connection for you.
Same idea I wrote about in Recipe Ideas. - 04
See the whole map
Open the Graph tab: solid lines for [[links]], dashed lines for mentions. Click any note to jump straight to it from the map.
[[Recipe Ideas]] → solid line Recipe Ideas → dashed line
Appearance
Four themes, switched instantly
Every color in Nexus is a CSS variable, so switching themes is instant and never requires a restart. Try one on this page — it's the same switch the app uses.
Privacy
Local First - Private by Default
Your notes stay on your device. The AI Assistant is the one part that runs through a server. Here's what it actually means for Nexus, plainly, so you can judge it yourself rather than take our word for it.
Notes live in a local SQLite file on your disk — Nexus doesn't store or sync your notes on a server.
No account needed for notes, search, or the browser. The AI Assistant is the one feature that needs a Nexus Cloud account.
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 text from your open tabs, if you turn on tab awareness) are sent to the Nexus Cloud service, which forwards them to a third-party AI provider — never your whole vault.
Nexus Cloud keeps your email, a hash of your session key and API key, and usage counts (tokens and timestamps) to enforce limits. It doesn't intentionally keep the text of your requests.
Your Nexus Cloud API key is stored in your operating system's own credential store, not in a browser-readable file.
Get Nexus
One app. Everything connected.
Free to try, with your notes stored locally. 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
search = Local embedding model
assistant = Nexus Cloud account