Cline
Open-source autonomous coding agent for VS Code, formerly known as Claude Dev.
Cline is an open-source autonomous coding agent for VS Code, formerly known as Claude Dev. Runs inside VS Code as an extension, no separate app to install.
About Cline
Cline is an open-source autonomous coding agent that runs inside VS Code — formerly known as Claude Dev.
Its draw is transparency in a familiar editor: it's a VS Code extension with no separate app, open source under Apache 2.0 with an agent loop you can inspect, and it supports plan/act modes with approval-gated terminal execution.
It's for VS Code users who want an inspectable agent with a human in the loop. Two caveats: it needs your own API key — there's no managed pricing tier — and cost can escalate quickly without per-task budgets.
It's the in-VS-Code, open option next to terminal agents like Aider and Claude Code.
Sources: cline.bot, this listing
Cline pros and cons
Pros
- Runs inside VS Code as an extension, no separate app to install.
- Open source under Apache 2.0; transparent agent loop you can inspect.
- Supports plan/act modes and approval-gated terminal execution.
Cons
- Requires bringing your own API key — no managed pricing tier.
- Cost can escalate quickly without per-task budgets.
Tagged
- Bring Your Own Key
- Supports Claude
- Supports GPT
- VS Code Extension
- Agentic Mode
- Multi-file Edits
- Terminal Execution
- Free
- Open Source
Cline alternatives
More from AI Coding Agents.
- 01Free →Aider
Open-source CLI coding agent that pair-programs in your terminal and commits to git automatically.
- 02Paid →Claude Code
Anthropic's official CLI agent for Claude — runs in the terminal, edits files, executes commands, and ships PRs.
- 03→GPU Terminal by Context.dev
Compare GPU rental prices across cloud providers
- 04→Inbox Zero
Open-source Superhuman alternative
- 05→Craft Agents
The world's most powerful agents, with the UX they deserve
- 06→NitroStack
Build, test, and deploy MCP servers in one place
Cline vs other tools
- Cline vs Cloudback MCP Server
- Cline vs Conan
- Claude Code Artifacts vs Cline
- Cline vs ZeroGPU
- Cline vs Sourcegraph Cody
- Cline vs Pieces
- Cline vs OpenHands
- Cline vs Roo Code
- Cline vs Kilo Code
- Cline vs Codex
- Claude Code vs Cline
- Aider vs Cline
- Cline vs Devin
- Cline vs Pythagora
- Cline vs smol developer
- Cline vs Ellipsis
- Cline vs Greptile
- Cline vs CodeRabbit
- Cline vs Qodo
Featured in
- 6 Best GitHub Copilot Alternatives in 2026
The strongest GitHub Copilot alternative for agentic work is Cursor — an AI-native editor whose multi-file agent goes further than Copilot's. Windsurf is the other agent-first editor. For free unlimited completion, use Codeium; for open-source, bring-your-own-key control, try Cline, Aider, or Continue. Every option here has a free tier.
- 7 Best Cursor Alternatives in 2026
The closest Cursor alternative is Windsurf — the other AI-native editor, with a multi-step Cascade agent and a more generous free tier. To leave the IDE for a terminal agent, use Claude Code or Aider. For free, open-source, bring-your-own-key tools, try Cline or Continue. Every option here has a free tier.
Related reading
Concepts you should know
Featured on Vibedonalds
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</a>Frequently asked questions
- What is Cline?
- Cline is an open-source autonomous coding agent for VS Code, formerly known as Claude Dev.
- Is Cline free?
- Cline is free to use. There is no paid tier as of the last index update.
- What platforms does Cline support?
- Cline runs on vscode-ext, jetbrains-plugin, cli.
- What are the alternatives to Cline?
- Similar tools in AI Coding Agents on vibedonalds: Aider, Claude Code, GPU Terminal by Context.dev, Inbox Zero.
- What are the downsides of Cline?
- Requires bringing your own API key — no managed pricing tier. Cost can escalate quickly without per-task budgets.