Fixes your writing everywhere
Typing in Discord, Gmail, Word or Notepad? It checks the paragraph you’re writing when you pause and offers fixes. Select any text and press CtrlAltSpace to correct or rewrite it in place: formal, friendly, shorter.
A private AI that
lives on your laptop.
Fixes your writing in every app as you type. Researches the web, drives a browser and operates your computer when you ask. Runs tasks in the background. No account, no cloud, no subscription.
Free. The app downloads the model (about 6 GB) on first run. Windows may show a SmartScreen notice for new apps: choose More info → Run anyway.
Everything you’d want from an assistant.
Running on hardware you already own.
Ask about anything on screen
CtrlAltA asks about your selection; CtrlAltS looks at your screen. Explain an error, summarise a page, draft a reply, then insert the answer where your cursor is.
Researches the web
Searches, reads pages and cites its sources. It can also drive a real browser window: open sites, fill fields and click buttons while you watch.
Uses your computer
Sees the screen, clicks, types, opens apps, manages windows and files, and runs commands. Every action that changes something asks first, unless you trust that tool.
Always on
Lives in the tray and starts with Windows. Schedule tasks like “every morning, summarise the news” or “every 30 minutes, check if my download finished” and get a notification with the result.
Thinks before it answers
Gemma 4 reasons step by step (you can watch its thought process), reads images, uses tools and remembers what you tell it to.
Built for Intel Core Ultra.
On first run it detects your hardware and asks where to run the model.
⚡GPU
Intel Arc graphics through Intel OpenVINO, with Vulkan as a backup. The fastest replies.
🧠NPU
Intel AI Boost: cool, quiet and easy on battery. Great for writing help that runs all day.
🧮CPU
Works on any Windows PC. Also runs on NVIDIA and AMD graphics through Vulkan.
Engine: llama.cpp (MIT) with Intel OpenVINO. Models: Google Gemma 4 E2B · E4B · 26B-A4B (official quantised builds).
Your data never leaves
your computer.
- The model runs locally. Chats, writing and screenshots are processed on your own device, even offline.
- Nothing to sign up for. No account, no telemetry, no analytics in the app.
- Password fields are never read. Live checking skips them, and the agent refuses to type into them.
- You stay in control. Clicking, typing, commands and file changes need your approval.
- Internet only when you ask. Web search and browsing happen only for tasks that need them.
How it works
- Install and open SectorZero AI.
- Pick where to run it: GPU, NPU or CPU. It recommends the best one for your laptop.
- Pick a model: Gemma 4 E4B for 16 GB laptops, E2B for 8 GB, 26B for 32 GB. It downloads once.
- Use it anywhere with the hotkeys, or open the app for chat, research and tasks.
Questions
What do I need?
Windows 10 or 11 (64-bit), 8 GB of memory (16 GB recommended) and 4–16 GB of free space for the model. Intel Core Ultra laptops get the GPU and NPU options.
Is it really free?
Yes. The model and the engine are open and run on your own hardware, so there’s nothing to pay for.
How fast is it?
On an Intel Core Ultra laptop with Arc graphics, Gemma 4 E4B replies at reading speed. The smaller E2B is quicker; the CPU is slower but works anywhere.
Does it work offline?
Yes, everything except web research and browsing.
Why does Windows warn me when installing?
New apps without an expensive code-signing certificate get a SmartScreen notice. Choose More info → Run anyway.