Cline

Cline Bot

An open-source autonomous coding agent for VS Code that plans, edits files, runs commands and fixes its own mistakes — with your choice of models through your own API keys.

Product preview

Overview

Cline was the first open-source agent to make “autonomous coding in your editor” feel dependable: describe a task, watch it draft a plan, edit files, run the test suite, read the failures and iterate — approving each step or handing over the wheel entirely. Every action is diffed and checkpointed, so trusting it with your repo is a dial you control, not a leap of faith.

Because it is BYOK, the model choice and the bill stay yours: plug in Claude, GPT, Gemini or local models, and swap per task. MCP support extends it with external tools — browsers, databases, issue trackers — which is where its community-driven development shows. For teams with strict data policies it is the private alternative to cloud agents; for everyone else it is a free, transparent window into how agentic coding actually works.

Pros / Cons

Pros

Fully open source with an active community
Bring your own keys — no markup on tokens
Every edit diffed, checkpointed and reversible
MCP ecosystem extends far beyond editing

Cons

Consumes tokens aggressively on complex tasks
Quality still depends on the model you plug in
VS Code-centric; no standalone editor

Who it's for

Large refactors across many files with review

Debugging with real terminal access

Teams needing a private, self-keyed agent

Learning how agentic coding works

Bottom line

The transparent, self-hosted-friendly coding agent — control and openness without sacrificing capability.

Key Features

Autonomous multi-file edits

Terminal command execution

BYOK multi-model support

MCP tool integration

Human-in-the-loop checkpoints

Compare Cline with alternatives

Cline vs GitHub Copilot Cline vs Cursor Cline vs Windsurf 4 products · Code Generation

Frequently asked questions

What is Cline?

Cline is a Code Generation tool developed by Cline Bot. The company was founded in 2024 and is headquartered in San Francisco, USA. An open-source autonomous coding agent for VS Code that plans, edits files, runs commands and fixes its own mistakes — with your choice of models through your own API keys.

Is Cline free?

Cline uses a freemium model: a free tier is available, and paid plans unlock more usage and advanced features.

Is Cline open source?

Yes — Cline is open source. The source code is publicly available at https://github.com/cline/cline.

What are the best alternatives to Cline?

Notable Code Generation alternatives include GitHub Copilot, Cursor, Windsurf. Browse all 4 tools in our Code Generation category for a full overview.

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