Your AI workspace. On hardware you control.
CryoZen runs chat, autonomous agents, document search, and a mail, calendar, and contacts client as one application on your own machine. Point it at local models or your own API keys. Nothing leaves unless you configure an integration that sends it there.
Available for macOS, Windows, Linux, and Docker.
Summarize the three contracts in /legal and flag renewal dates.
Indexed 3 documents locally. Two auto-renew on 01 Mar; one needs 60 days notice.
Draft the notice email and hold it for my review.
Not a promise in a policy. A property of where it runs.
CryoZen is a server you start on your own hardware. The guarantees below are structural, not contractual.
Binds to localhost by default
The server listens on 127.0.0.1. Nothing is reachable from your network until you decide it should be.
Credentials encrypted at rest
API keys, mail passwords, and OAuth tokens are encrypted in your own database, on your own disk.
No telemetry
No analytics, no phone-home, no usage beacons. There is no build of CryoZen that reports on you.
Data leaves only when you say so
Connect a hosted model or an external mailbox and traffic goes there. Connect nothing and nothing leaves.
Everything below ships in the application today.
Not a roadmap. These are the surfaces you get on first launch.
Chat with any model
Connect local backends (Ollama, llama.cpp, vLLM, LM Studio) or hosted providers (OpenAI, Anthropic, Groq, DeepSeek, GitHub Copilot). Compare answers from several models side by side.
Agents with real tools
Give a model shell access, file access, web search, and MCP servers so it can finish multi-step work, inside a workspace boundary that confines what it can touch.
Research that cites its sources
An engine that searches, crawls, and synthesizes a cited report, backed by its own SearXNG instance so queries never reach a third-party search engine.
Your documents, indexed locally
PDFs, Office files, and text go into a local vector store for retrieval-augmented generation, plus long-term semantic memory that carries across conversations.
Mail, calendar, and contacts
A full IMAP and SMTP client with scheduled sending and reminders, CalDAV and CardDAV sync, tasks, and automations that run on a schedule or fire a webhook.
Serve models on your own hardware
Scan GPU and memory, get quantization recommendations that actually fit, and start or stop model servers, including over SSH on a remote host.
People who want the capability without handing over the data.
The same install scales from one laptop to a shared instance behind your own proxy.
One private workspace for chat, research, mail, and notes.
A shared instance behind your own reverse proxy, with per-user accounts and per-user data.
An agent that runs shell commands, reads and writes files, searches the web, and calls MCP servers under your supervision.
macOS, Windows, Linux, and Docker.
Desktop builds launch a local server and open the workspace in an app window. Docker is the path for servers and GPUs.
macOS
Disk image (.dmg)
A drag-to-Applications launcher app. Opening it starts the local server and opens CryoZen in an app window.
Windows
Portable archive (.zip)
A portable folder with a launcher. Nothing is written outside the folder you unzip it into.
Linux
Portable archive (.tar.gz)
A portable directory with a shell launcher. Works on any distribution with Python available.
Docker
Container image
The recommended path for servers, GPUs, and anything long-running. Pins every dependency and survives host upgrades.
Run it tonight on the machine in front of you.
Download a build, or clone the repository and bring it up with Docker Compose in three commands.
Every build is published on GitHub Releases.