Persistent context
Give your assistant a name and a durable workspace. Conversations, approved memory, documents, projects, tasks, and local state can remain useful across sessions instead of disappearing when a tab closes.
Local-first AI workspace for Windows
Your AI workspace.
On your computer.
Under your control.
NexxusOS Desktop brings conversation, memory, files, writing, private browsing, Deep Research, coding, integrations, and approval-gated tasks into one persistent desktop workspace.
Built for people who want an AI that can understand their work, stay useful across sessions, and move beyond answers — without hiding what it can see or what it has done.
Windows 10 & 11 · Local memory · Local or API models · Approval gates · Action receipts
- Chat
- Memory
- Files
- Writer
- Browser
- Deep Research
- Codebase
- Tasks
- Integrations
~/nexxusos — chatagent.online
More than a chat window
One workspace for thinking, creating, researching, coding, and getting work done.
Most AI tools begin and end with a conversation. NexxusOS Desktop gives the conversation somewhere to go.
Your agent can work with the files, documents, browser pages, research jobs, codebases, tasks, and integrations inside your workspace. When work becomes consequential, NexxusOS can preview the action, ask for approval, and preserve a receipt of what actually happened.
Built-in workspaces
Move naturally between Chat, Files, Writer, Browser, Deep Research, Codebase, and Tasks without rebuilding the context of your work in a collection of unrelated applications.
Governed action
NexxusOS separates suggestions, staged actions, approvals, execution, and receipts. You can see what is being requested, what is allowed, what is blocked, and what has actually completed.
NexxusOS is designed to route work by evidence — not simply let a model claim that something happened.
The NexxusOS workspace
Everything your agent needs to work beside you.
Each NexxusOS surface has a clear responsibility. Together, they form one working environment instead of a loose collection of AI features.
NexxusOS Desktop
Chat
Think & Remember
Chat and local continuity
Talk with your named assistant in a familiar conversation interface. NexxusOS can use current attachments, workspace context, and approved local memory while keeping current evidence more important than old assumptions.
- Named personal assistant
- Current-turn file and image attachments
- Persistent local memory
- Source-aware answers
- Model routing based on the task
NexxusOS Desktop
Files & Writer
Create & Organize
Files and NexxusOS Writer
Bring files into a local workspace, organize project material, and move directly into a dedicated writing environment for documents, notes, technical content, and drafts.
- Local file library
- Search and type filtering
- Project workspaces
- Document import and storage
- Focused writing and editing tools
NexxusOS Desktop
Browser & Deep Research
Browse & Investigate
Private Browser and Deep Research
Use the built-in browser for visible web context or launch a durable Deep Research job for broader investigations. Follow research lanes, sources, findings, progress, reports, and receipts from one place.
- Private Chromium workspace
- Visible-page context
- Guarded browser actions
- Multi-source research jobs
- Findings, citations, reports, and receipts
NexxusOS Desktop
Codebase & Coding Agent
Build & Verify
Codebase and NexxusOS Coding Agent
Register a local repository, inspect its structure without executing project code, ask focused questions, prepare bounded context, identify tests and project commands, and turn coding objectives into durable governed work.
- Local repository indexing
- Git branch and status context
- Symbols, tests, and dependency signals
- Review and verification workflows
- Approval-gated coding Work Orders
NexxusOS Desktop
Tasks & Work Orders
Plan & Execute
Tasks, Work Orders, and Routine Drafts
Turn an objective into durable step-by-step work. Track progress, approvals, blockers, command results, background work, and receipts without relying on a chat message to remain alive.
- Durable Work Orders
- Explicit steps and progress
- Approval-gated commands
- Background task state
- Receipts and supported restore points
- Guarded routine plans
NexxusOS Desktop
Awareness & Integrations
See & Control
Awareness and Integrations
See what NexxusOS can currently access, which model is active, which sources are configured, what permissions apply, and what remains blocked. Keep local files, browser sessions, API connectors, terminal results, and model providers visibly separate.
- Live capability snapshot
- Permission and boundary visibility
- Local and external source separation
- Integration setup status
- Emergency controls
- Evidence-backed activity
From request to receipt
Useful agency should be visible.
NexxusOS is designed to help with real work without turning control into a black box.
- 01
Ask naturally
Start in Chat with a question, file, project, research request, coding objective, or task.
- 02
Gather the right context
NexxusOS routes the request to the relevant workspace, current file, visible browser page, codebase, configured integration, or local memory.
- 03
Preview the work
When an action could change a file, run a command, use an integration, or affect another system, NexxusOS can stage the work and show what is being requested.
- 04
Approve or block
You decide whether governed actions should continue. Missing permissions, unsupported actions, and unsafe requests remain visible instead of being silently ignored.
- 05
Verify with receipts
Completed work can leave a receipt containing the target, decision, result, timestamps, output summary, and available restore information.
~/nexxusos — workflowagent.online
A proposed action is not an executed action. NexxusOS is built to preserve that difference.
Built for work that crosses tabs
Stay in one flow from question to finished work.
Research and synthesis
Investigate a topic across current web sources, local files, visible browser pages, and workspace context. Keep findings and citations connected to a durable report.
Writing and document work
Move from conversation to a working document without losing the source material, project context, or decisions that shaped the draft.
Software projects
Understand a local repository, prepare focused code context, identify tests and commands, review changes, and track coding work through governed verification stages.
Operational work
Turn recurring or multi-step objectives into Tasks, Work Orders, approval requests, routine drafts, and receipt-backed outcomes.
Local-first, not local-only
Your workspace stays local.
Connections happen when you choose them.
NexxusOS Desktop stores its user profile, memory, workspace state, documents, and local artifacts under the current Windows user's local application and workspace paths.
Supported local models can run directly on your machine. Web research, provider APIs, and external integrations use a network connection only when you configure and use them. NexxusOS keeps the active model route and connected sources visible, so you can understand where your work is happening.
On-device continuity
Your local profile, workspace state, memory, and local artifacts belong to your Windows user instance.
Model choice
Use supported local models, optional provider APIs, or governed routing policies without replacing the workspace around the model.
Source boundaries
A visible browser page is not silently treated as API access. Local Git is not GitHub API access. A model statement is not an action receipt.
Permissioned actions
Files, browser actions, terminal work, integrations, and automation can be allowed, approval-gated, or blocked by policy.
Receipts and restore information
Trust-significant actions can record what was requested, what was approved, what ran, the result, and whether restoration is supported.
Awareness and emergency controls
See what NexxusOS can access right now and disable browser control, shell work, external integrations, routine execution, or non-local model routes when necessary.
Local-first means the default center of gravity is your computer — not that NexxusOS disguises connected features as offline ones.
Your workspace should outlast any one model
Use the model that fits the moment.
NexxusOS separates the working environment from the reasoning engine. Change the selected model route without discarding your files, tasks, workspace organization, or local continuity.
Local models
Run supported models through the managed local runtime when privacy, offline availability, or direct hardware use matters most.
Provider APIs
Configure supported provider access when a task benefits from a remote model. Provider use must remain visible and subject to local policy.
Governed routing
Choose local, API, or hybrid routing policies based on the workload while preserving the same NexxusOS workspace and trust controls.
Local-model speed and capacity depend on the user's CPU, RAM, GPU, VRAM, model size, and context settings.
Available in the current beta
A working desktop today — with more still being refined.
NexxusOS Desktop is an actively developed Windows beta. The current product already brings together its core workspace, while some advanced integrations, coding workflows, automation routes, and device-control features remain bounded, approval-gated, or dependent on configuration.
- Chat with a named assistant
- Local memory and workspace continuity
- Current-turn attachments
- Files and project workspaces
- NexxusOS Writer
- Private NexxusOS Browser
- Deep Research jobs and reports
- Codebase Workspace
- NexxusOS Coding Agent workflows
- Tasks and Work Orders
- Guarded terminal tasks
- Routine Drafts
- Awareness and permission visibility
- Local models and optional provider models
- Configurable integrations
Features may change during beta, and updates may be required. External services require the appropriate account, connector configuration, scopes, permissions, and network access.
Windows beta requirements
Built to run as a real desktop workspace.
Actively developed Windows beta · Updates included
Operating system
Windows 10 or Windows 11, 64-bit.
Memory
16 GB RAM minimum. 32 GB or more recommended for larger local workloads.
Local model performance
CPU-only operation is supported but slower. An NVIDIA RTX GPU with 8 GB VRAM or more is recommended for a strong local-model experience.
Storage
Allow 8–10 GB free (15–25 GB recommended for multiple local models).
From download to desktop in three steps.
- 01
Request beta access
Enter your name and email to receive the current Windows beta download.
- 02
Download and extract
Download the complete beta package and extract the full folder to a location where you have read and write access.
- 03
Run the installer
Keep Setup.exe and the accompanying payload file together, then launch Setup.exe to create your local NexxusOS Desktop instance.
Windows may display additional security prompts for an unsigned beta build.
NexxusOS Desktop Beta
Bring your own AI workspace to life.
Get the current Windows beta and create a NexxusOS instance built around your files, your memory, your model choices, and your permission settings.
- Windows 10 and 11
- Local per-user workspace
- Local and optional API models
- Beta updates included
- Clear installation instructions
Questions before you install
Your AI should have a workspace — not just a window.
Bring your conversations, files, research, documents, code, tasks, models, and permissions together in NexxusOS Desktop.