Cline - AI Coding, Open Source and Uncompromised

Overview

Cline is an open-source AI coding agent that operates inside VS Code, the terminal, and as an embeddable SDK. It helps developers understand, refactor, and automate codebases using AI models from any major provider.

Unlike vendor-locked coding assistants, Cline supports Claude, GPT, Gemini, local models via Ollama/LM Studio, or any OpenAI-compatible endpoint. Developers bring their own API keys or weights, keeping control over costs and infrastructure.

Key Benefits

• 8 million plus installs across all platforms, VS Code Marketplace, and Open VSX Registry.
• 64.8k GitHub stars and a 4.1/5 rating from 303 VS Marketplace ratings.
• Coordinated multi-file edits with linter-aware fixes, diffs, checkpoints, and one-click undo.
• Runs bash commands live — dev servers, tests, and deploys execute inside the terminal and react to output as it appears.
• Plan mode lets users align on a strategy before executing, with optional auto-approve for unattended runs.
• No vendor lock-in — every major model provider supported including local, self-hosted options.

How It Works

You install Cline via the VS Code extension marketplace or the CLI with npm i -g cline. You then pick a task — understand code, refactor across files, or automate a workflow — and Cline executes it step by step in your editor or terminal.

You toggle Plan mode to agree on a strategy, then Act mode to execute. Every step can be approved manually, or you flip auto-approve for autopilot. The agent opens files, makes coordinated edits, runs bash commands, and checks results before moving to the next step.

Use Cases

• Individual developers — understand unfamiliar codebases by asking Cline questions about files, dependencies, and behavior directly in VS Code.
• Engineering teams — coordinate multi-file refactors across large codebases while Cline keeps imports, types, and behavior consistent.
• DevOps engineers — run Cline CLI in scripts, cron jobs, and CI pipelines for recurring checks, updates, and custom workflows.
• Open-source maintainers — ship .clinerules with repos to enforce coding standards, architecture conventions, and deployment practices.
• Platform teams — embed the Cline SDK into internal tools with custom tools and lifecycle hooks via the plugin system.

Why Choose This Product

Cline is best suited for developers and teams who want full control over AI coding — open source, no vendor lock-in, and the ability to bring any model or API key. It is free for individual developers; organizations pay only for AI inference on a usage basis with no subscriptions or seat fees for the open-source version.