Coder

Coder is a self-hosted platform for cloud development environments. Workspaces are defined in Terraform, so they can be VMs, Kubernetes pods or Docker containers on your own infrastructure, and they connect to your editor through a secure WireGuard tunnel. Coder Agents adds AI coding agents that run on the same infrastructure.

Coder shuts down idle workspaces automatically to save cost and lets new developers start in a ready environment instead of setting one up. Templates describe each kind of workspace, and you can connect VS Code, JetBrains IDEs or other editors. For AI coding it lets you bring any model, keeps LLM credentials out of workspaces, and centralises authentication, auditing and cost tracking through its AI Gateway. You start it with a single coder server command.

Coder lets a company keep code and development machines on its own infrastructure while giving developers and AI agents the same ready-to-use environments. The core is AGPL-licensed; Premium features are paid.

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coder/coder

• GitHub CodespacesGitHub's hosted cloud development environments.
• Microsoft Dev BoxMicrosoft's cloud workstations for developers.
• DaytonaNo. 071Open-source infrastructure for running AI-generated code.

See every open-source alternative to GitHub Codespaces in the collection.