CCHarness is a local-first, multi-model AI chat desktop app (Tauri 2 + React 18 + Rust) licensed under AGPL-3.0, bringing multiple large models into a single desktop workbench.
It offers seven workflow modes (agent, plan, goal, deep reasoning, review, image generation, and custom state machines), multi-agent collaboration (arena comparison, round-table group chat, named sub-agents), vector long-term memory with automatic reflection, and request-side prefix cache hit rate as a first-class metric. It ships 16+ built-in tools, MCP, Skills, Guardrails safety rails, and multimodal input, supporting DeepSeek, GLM, Kimi, OpenAI, Anthropic, Ollama, and any OpenAI-compatible endpoint; API keys are encrypted at the system level.
Publisher’s description
What is CCHarness?
CCHarness is an open-source ai assistants & llm program for Windows from ccharness. It is written in Rust.
Installation and requirements
Official installers exist for 64-bit as MSI. Installation asks for administrator rights. The installer supports unattended (silent) installation. An MSI package is available for deployment with Group Policy, Intune or Configuration Manager.
Popularity and file types
The source code on GitHub (Technicalflight/CCHarness) has 4 stars. Similar programs include Claude Code, Codex CLI and ChatGPT.
Project description on GitHub: “把多个大模型装进同一个桌面工作台：六种工作流模式、多智能体协作、向量记忆与请求侧前缀缓存工程。本地优先，API Key 系统级加密，Tauri 2 + React 18 + Rust，AGPL-3.0 开源。Windows / macOS / Linux。”
Pros / Cons
Pros
- Open source: the code can be inspected and built by anyone
- MSI package for managed deployment
- Documented silent install
- Updated in the last two months
Cons
- No native ARM64 build
- Installation needs administrator rights
In short: CCHarness is an open-source ai assistants & llm tool for 64-bit PCs. Administrators can deploy it unattended.
Is CCHarness safe to download?
- The file is served by github.com, the publisher’s own domain
- The download link uses HTTPS
- A SHA256 hash is published, so you can verify the file:
0084E3210BD880C1A8F81AB16AC7A3181DC659A2299E38360CF182D97B614270· Open the VirusTotal report for this hash - The link has not been checked yet
- The source code is public
- ExeAtlas does not host, wrap or modify installers
Related guide: How to check a file’s SHA256 hash on Windows
Recent versions
All 1 versions ›| Version | Date | Size | Files |
|---|---|---|---|
| 0.2.0Latest | September 12, 2026 | — | 64-bit MSI |
Install from the command line
Silent install ›winget install --id Technicalflight.CCHarness -emsiexec /i CCHarness_0.2.0_x64_en-US.msi /qn /norestartmsiexec /x {F520BA2F-C70B-4650-8DE2-A242FA63937A} /qn /norestartRelated guide: How to use winget: install and update apps
Information
- Publisher
- ccharness
- Category
- AI assistants & LLMs
- Licence
- AGPL-3.0-or-later
- Price
- Free
- Source code
- github.com/Technicalflight/CCHarness
- Written in
- Rust
- Requires
- Windows 11 / 10
- Architecture
- 64-bit
- Installer
- MSI
- Version
- 0.2.0
- Released
- September 12, 2026
- Added to the catalogue
- October 9, 2026
- Versions listed
- 1
- GitHub stars
- 4
- Website
- technicalflight.github.io
- winget ID
- Technicalflight.CCHarness
- MSI product code
- {F520BA2F-C70B-4650-8DE2-A242FA63937A}
Ratings and reviews
No reviews yet. Be the first to rate it.
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Frequently asked questions
Is CCHarness free?
Yes. CCHarness is open-source software under the AGPL-3.0-or-later licence.
Is CCHarness safe to download?
The download comes from github.com, which belongs to the publisher; ExeAtlas does not host or change the file. Compare its SHA256 hash with the one shown here, or open the VirusTotal report for that hash.
How do I install CCHarness with winget?
Open PowerShell or Windows Terminal and run the winget command shown on this page. winget downloads the official installer and checks its SHA256 hash before running it.
Can CCHarness be installed silently?
Yes. The silent install page lists the exact command for each installer, including msiexec for the MSI package.
Does CCHarness run on ARM (Windows on Arm)?
There is no ARM64 build; Windows 11 on Arm can run the 64-bit version through emulation.
What are alternatives to CCHarness?
Claude Code, Codex CLI, ChatGPT, oh-my-pi and GPT4All. The alternatives page compares them.
