devvm is an open-source Go CLI that gives each project folder its own isolated virtual machine for you or a coding agent.
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Running `devvm` in a folder detects the toolchains the project needs, mounts only that folder at the same path, and opens a shell in the VM where Claude Code, Codex, opencode or pi can run without touching the host.
- 01
One Lima VM per project folder, reopened on the next `devvm` run
- 02
Toolchain detection from project files such as package.json
- 03
Claude Code, Codex, opencode and pi run inside the VM with imported settings, skills and MCP servers
- 04
Allowlist network tier by default, with other network tiers available
- 05
Secrets such as GitHub and Claude Code tokens stay on the host machine
- 06
Built-in docker, nix and desktop layers plus custom layers via `devvm layer new`
- 07
`devvm doctor` checks prerequisites; releases are signed with minisign
Open Source
devvm is free and open-source under the MIT license with no paid tiers. It runs VMs locally on Lima, so the only cost is your own machine; coding agents inside the VM use your existing Claude, ChatGPT or provider subscriptions.
Best for
Developers on macOS or Linux who want to run coding agents in a per-project sandbox to limit the blast radius of supply chain attacks, prompt injections or rogue agent commands.
Not ideal for
Windows users, Intel Mac users (not yet tested), or teams that need cloud-hosted sandboxes and access to many internal services across repositories.
A focused, security-minded way to sandbox local coding agents per project; very new and still at release-candidate stage.
v0.1.1-rc.2 pre-release published on November 9, 2026, days after the project's public launch on November 6, 2026, which reached 189 points on Hacker News.
As of
Is devvm free?+
Yes - devvm is Open Source. devvm is free and open-source under the MIT license with no paid tiers. It runs VMs locally on Lima, so the only cost is your own machine; coding agents inside the VM use your existing Claude, ChatGPT or provider subscriptions.
Is devvm open source?+
Yes - devvm is open source. devvm is free and open-source under the MIT license with no paid tiers. It runs VMs locally on Lima, so the only cost is your own machine; coding agents inside the VM use your existing Claude, ChatGPT or provider subscriptions.
Who is devvm best for?+
Developers on macOS or Linux who want to run coding agents in a per-project sandbox to limit the blast radius of supply chain attacks, prompt injections or rogue agent commands.
Who is devvm not ideal for?+
Windows users, Intel Mac users (not yet tested), or teams that need cloud-hosted sandboxes and access to many internal services across repositories.
What are the best devvm alternatives?+
The closest devvm alternatives on ai.dosa.dev are Pieces for Developers, agenttrace, Vibe Kanban - all listed under Developer Productivity & Workflow.
Who makes devvm?+
devvm is developed by devvmhq. It is listed in the Developer Productivity & Workflow category on ai.dosa.dev.
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