Open-source AI coding agent
Cline
Cline is an open-source coding agent that runs as an extension in VS Code and JetBrains. It works in a two-phase Plan/Act loop: it proposes a plan, waits for approval, then makes the change. It is model-agnostic and bring-your-own-key, so the tool itself is free and the cost is the model API you point at it. Every file write, terminal command, and browser action is shown before it runs, which suits teams that need an audit trail.
Visit website →Best for
- Developers who want approval-gated, human-in-the-loop edits
- Teams in regulated environments that need an action audit trail
- Users who want to bring their own model provider or API key
Not best for
- Developers who want fully autonomous, hands-off runs
- Users who prefer a hosted subscription to managing API keys
- Teams that want a single vendor for model and support