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Cline

Open-source agentic AI coding assistant that runs inside VS Code.

Visit Cline@cline_ai

About Cline

Cline is an open-source VS Code extension that acts as a fully agentic AI developer — it can read and write files, run terminal commands, browse the web, and complete multi-step coding tasks autonomously. Bring your own API key (OpenAI, Anthropic, Gemini) to avoid subscription lock-in. The most powerful open-source alternative to Cursor.

Key features

  • Agentic — reads files, writes code, runs terminal commands
  • Bring your own API key (any model)
  • Browser automation for web research
  • Checkpoint system to undo agentic steps
  • MCP (Model Context Protocol) tool support

Pros & limitations

Pros

  • Fully open source — no subscription
  • Most powerful free agentic coding tool available
  • Model-agnostic — use any LLM provider

Limitations

  • API costs can add up with heavy agentic use
  • Less polished UX than Cursor
Alternatives

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