Claude Cowork Alternative: Free Open-Source AI Agents 2026
Claude Cowork alternative picks, free and open source: Hob, OpenWork, OpenCode and Open WebUI, compared on local files, models, platforms and licences.
•4 min read•AI Chat & Assistants
Verdict:Hob runs models fully on your own computer, OpenWork is the closest open-source desktop copy of Cowork's workflow, OpenCode suits developers, and Open WebUI suits self-hosters. All are free apps, though model quality and running costs are yours to manage.
Quick comparison
| Tool | Price | Platforms | Best for | Tested |
|---|---|---|---|---|
| Hob | Free and open source (MIT) | Windows, macOS, Linux | People who want an agent on their local files that runs open-weight models fully on their own computer | Docs only |
| OpenWork | Free and open source (MIT outside the ee/ folder) | Windows, macOS, Linux | A desktop app that mirrors Cowork's local-files workflow, with your own API key or a local model | Docs only |
| OpenCode | Free and open source (MIT) | Windows, macOS, Linux | Developers who want a coding agent in the terminal or a beta desktop app | Docs only |
| Open WebUI | Free, self-hosted (licence requires keeping its branding) | Self-hosted | Technical users who want a self-hosted, offline-capable chat interface with Ollama and agent tools | Docs only |
Independent comparison. Paid placements are labelled separately; editorial links earn no affiliate commissions. Learn more.
Good fit if
- You want an agent that works on your local files without a paid Claude plan
- You want to run open-weight models on your own computer for privacy
- You are comfortable choosing a model or bringing your own API key
Not ideal if
- You want Cowork's hosted, no-setup experience
- Your computer has little memory or no GPU and you expect cloud-level model quality
- You need a vendor to support and secure the agent for a company
If you want a free Cowork-style agent, Hob, OpenWork and OpenCode are MIT-licensed apps for macOS, Windows and Linux. Hob, posted to Hacker News on October 26, 2026, runs open-weight models locally. OpenWork copies Cowork's local-files workflow, and OpenCode is for developers. Open WebUI covers self-hosting.
What Cowork is and what it costs
According to Anthropic's Cowork article, Cowork brings Claude Code's agentic abilities to knowledge work, so you describe an outcome and Claude plans and carries out multi-step tasks. It is limited to the Pro, Max, Team and Enterprise plans. The article says tasks run in the cloud, and local files are reached through the Desktop app, in folders you connect.
Claude's pricing page lists Pro at $17 a month with annual billing, or $20 monthly, and Max from $100 a month. It lists Free at $0 without Cowork, and says "Claude Cowork is now just Claude", rolling out to Pro and Max.
What matters in a replacement
The Hob thread on Hacker News shows what readers want. One commenter said choosing a model and a runtime is paralysing and asked for something that just works. Another called the local models "really dumb, mainly" and reported about 18 GB of models installed with no way to remove them. The author promised a fix.
Criteria: cost and where it runs, access to your local files, model freedom, platform, and licence.
Free and open-source Claude Cowork alternatives
Hob
Hob is a desktop app that works on your files and runs open-weight models on your own computer. According to its repository, it is MIT licensed, runs on Mac, Windows and Linux, works offline, and picks a model that fits your hardware. Downloads are a Mac arm64 DMG, a Windows x64 EXE and a Linux AppImage. It has about 263 stars.
The Show HN post says it uses sandboxed Python, optional web search through SearXNG and MCP connectors. The repository shows no release version, so treat it as new software.
Who should not pick it: anyone who needs frontier-model quality on a laptop with little memory.
OpenWork
OpenWork calls itself the free, open-source alternative to Claude Cowork and Codex for AI agents working on local files. Its repository says it is built on OpenCode, and runs on macOS, Windows and Linux. It lets you bring an API key or run local models through Ollama or any OpenAI-compatible server, and cites 50-plus providers.
Everything outside the ee/ folder is MIT. The ee/ control plane is source-available, free for up to 5 users and for 30-day evaluations. The repository shows about 24.3k stars.
Who should not pick it: teams that need to avoid source-available components or want zero setup.
OpenCode
OpenCode describes itself as an open-source AI coding agent. According to its repository, it is MIT licensed, offers a terminal interface and a beta desktop app for macOS, Windows and Linux, and has about 222.3k stars. It has build and plan agents, the second read-only.
It is a developer tool rather than an office assistant, and its repository gives no provider count. A comparison article by Gradually notes that you manage credentials and endpoints yourself.
Who should not pick it: non-developers who want to organise documents and spreadsheets.
Open WebUI
Open WebUI is a self-hosted AI platform. Its repository says it supports Ollama and OpenAI-compatible APIs and is built to run entirely offline. It offers local document retrieval and agentic execution with a terminal and filesystem. It has about 157k stars.
Its licence mixes components under the Open WebUI License, which requires keeping its branding. A Hacker News commenter said it has a large feature set and runs offline by default, but does not pick models for your hardware.
Who should not pick it: people who want a one-click desktop app.
When a paid tool is the better answer
Pay if you want the hosted version and do not want to manage models. Claude Pro costs $17 a month with annual billing, or $20 monthly, per Anthropic's pricing page, and Cowork runs in Anthropic's cloud. Stay free if privacy, offline use or API control matter more than convenience. Free apps still cost something: you pay for hardware, or for model API usage if you bring a key.
Comparison
| Hob | OpenWork | OpenCode | Open WebUI | |
|---|---|---|---|---|
| Price | Free | Free | Free | Free |
| Licence | MIT | MIT, ee/ source-available | MIT | Branding-preserving |
| Platforms | Windows, macOS, Linux | Windows, macOS, Linux | Windows, macOS, Linux | Self-hosted |
| Local models | Yes, built in | Via Ollama or compatible server | Not stated | Via Ollama |
| Aimed at | Everyday users | Teams and individuals | Developers | Self-hosters |
How to choose
- You want privacy and offline use. Start with Hob, and expect smaller models than Claude.
- You want Cowork's workflow with your own key. OpenWork.
- You write code. OpenCode. Compare more in Claude Code alternatives.
- You run a home server. Open WebUI.
Not sure you need an agent at all? See the broader Claude alternatives and ChatGPT alternatives pages, or our open-source AI code assistant list.
Limits of this review
No tool was tested, so model quality, speed and hardware needs are not measured. Hob's repository shows no release version, and OpenCode's repository gives no provider count. ChatGPT Work and Microsoft's Copilot Cowork were not checked on official pages and are left out. The Cowork help article does not give usage limits.
FAQ
What is the best Claude Cowork alternative?
For the same workflow on your own files, OpenWork describes itself as a free, open-source alternative to Claude Cowork and Codex for macOS, Windows and Linux. For fully local models, Hob runs open-weight models on your computer. Developers can use OpenCode. All need a model, either local or via your API key.
Is there an open source Claude Cowork alternative?
Yes. Hob and OpenCode are MIT licensed, and OpenWork is MIT outside its ee/ folder, which holds a source-available control plane. Open WebUI's licence requires keeping its branding, so it is open to read but not plainly open source. Check each licence file before you build on any of them.
Does Claude Cowork have a free plan?
No. Anthropic's help article says Cowork is limited to paid plans: Pro, Max, Team and Enterprise. Claude's pricing page lists Free at $0 and Pro at $17 a month with annual billing or $20 monthly, and says Cowork is rolling out to Pro and Max.
Can I run a Claude Cowork alternative offline?
Yes, with a local model. Hob's repository says it can work offline using open-weight models such as Gemma and gpt-oss. Open WebUI says it is built to run entirely offline, and OpenWork can use local models through Ollama. One Hacker News user found the local models weak for real work.
Does Cowork run on my computer?
Mostly not. Anthropic's article says Cowork runs your tasks in the cloud, on Anthropic's servers in an isolated environment. When a task needs a local file or your browser, Claude reaches it through the Desktop app, using only folders you connect. Local alternatives like Hob keep the model on your machine.
What hardware do I need for local models?
Hob's repository gives no RAM figures. In the Hacker News thread, its author suggested model sizes by hardware, from Gemma 4 E2B on an 8 GB Mac to Gemma 4 26B on 24 to 64 GB Macs. Treat that as one developer's guidance and test on your own machine.
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Kevin Fan
Kevin Fan is a SaaS founder. He runs Free Instead Of, which tracks free and open-source alternatives to paid software and checks each price and free-plan limit against the vendor's own pages.
Methodology
Anthropic's Cowork help article and pricing page, and the repositories of Hob, OpenWork, OpenCode and Open WebUI, were read on 2026-10-28. The Hob Show HN thread from October 26 and 27, 2026 and three competing articles from August to October 2026 were read for user language. Reddit was not used. No tool was installed or tested.