Cline

Open source alternative to GitHub Copilot, Gemini Code Assist, Cursor and Claude Code

70.8K stars
Apache-2.0
Active this week
Last commit 2 days ago

Last verified Oct 20, 2026

Run an open source VS Code coding agent that plans multi-file changes, edits code, executes commands, and works with your own LLM keys.

Visit website GitHub70.8K

Read the full breakdownWho it is for, how it works, trade-offs, the quick start and the FAQ

who it's for

Who Cline is for#

Startup founder scaling legacy scripts

Convert a monolith of migration scripts into reproducible agent-guided tasks that include validation and safe checkpoints.

Skip if:

You only want inline editor suggestions and never want command execution.

Indie developer shipping a release

Run multi-file refactors, update tests, and fix lint errors in a single agent session before merging.

Skip if:

You are working on isolated one-liners and do not need task orchestration.

Internal platform engineer

Use approval gates to enforce review rules while automating repetitive code changes across repositories.

Skip if:

You need hosted SLA terms and do not run local tooling.

Product engineer in regulated environments

Keep changes auditable in checkpoints and apply policy rules before each edit during sensitive code updates.

Skip if:

Your team requires hands-off autonomous commits with no per-step checkpoints.

the problem

The problem it solves#

Cline is for teams that cannot leave coding tasks on a single autocomplete prompt and then re-run commands manually. Teams using Copilot, ChatGPT, or scripted snippets still switch between editing, terminal checks, and troubleshooting steps. Cline reduces this overhead by keeping planning, editing, and validation in one loop. It is most useful for builders who want AI acceleration across many files, without losing review visibility.

how Cline solves it

How it solves it#

Repository-level execution

Reads project context, edits files, runs terminal commands, and moves across folders without opening each context manually.

Plan and act control

Uses explicit Plan mode for intent, then Act mode for execution with step-level approval before every write.

Model flexibility

Works with Anthropic, OpenAI, Gemini, Ollama, and OpenAI-compatible endpoints so you can shift providers without rewiring your workflow.

Tool and MCP integration

Connects external tools or APIs with MCP and reusable plugin hooks for project-specific automation.

Terminal-native workflows

Supports CI-friendly and headless usage for scripted review, fixes, and recurring maintenance tasks.

strengths · trade-offs

Strengths and trade-offs#

Strengths

Open protocol compatibilitySupports multiple model providers and local model stacks so budget, privacy, or compliance needs can shape the AI backend.
Safe change flowDiff-first approvals and one-step approval controls reduce accidental edits and support auditable change management.
Broader agent scope than autocompleteHandles multi-file refactors and command execution in one sequence rather than one-line suggestion bursts.

Trade-offs

-Provider and context setup requiredYou need a working model key or local endpoint before productive agent runs.
-Heavier than single-purpose toolsOn small edits, the planning and approval flow can feel heavier than lightweight suggestions.
-Requires terminal-aware usage habitsTeams that prefer fully autonomous behavior without checkpoints may find the default controls restrictive until they tune policies.
-Team governance lives in paid plansThe open source install gives individuals local IDE and terminal control, but enterprise needs such as SSO, RBAC, audit logs, centralized billing, and priority support sit behind Cline Teams or Enterprise. Teams adopting the free setup should plan their own governance and provider controls.

versus alternatives

Cline vs alternatives#

GitHub Copilot is strong at inline completion and quick suggestions while you stay in the editor, and many teams keep it for that use case. It does not match Cline for end-to-end task orchestration across files, terminal commands, and validation loops. Cursor brings a polished UI with built-in workflows, but teams often still pay for a proprietary stack and depend on one primary model strategy. Cline gives you a broader model choice and local execution path, while keeping every major action visible before write. For teams that value auditable AI coding, policy-driven approvals, and flexibility to move between Claude, GPT-compatible APIs, and local models, Cline is the more controllable option.

install · quick start

Quick start#

bash

Install Cline as a VS Code extension, then connect your preferred model provider in the extension settings. Use the source install path when you want to inspect or modify the extension locally.

```bash
code --install-extension saoudrizwan.claude-dev
git clone https://github.com/cline/cline.git
npm install
npm run install:all
```

tech stack · detected from GitHub

What it's built on#

Languages: JavaScriptTypeScript
Frameworks: React

frequently asked

FAQ#

Is Cline a free coding assistant?

Cline is Apache 2.0 and free to run. You supply your own model access for Anthropic, OpenAI, Gemini, or local providers.

Does Cline support both IDE and terminal workflows?

Yes. It supports VS Code, JetBrains, and terminal usage patterns, including headless and scripted automation.

How do I keep edits safe?

Use Act mode with approvals and review diffs before each write, so you can block risky operations before files change.

What is Cline best at?

It is strongest for multi-step coding tasks that require project context, command execution, and checkpoints across multiple files.

Can I run Cline without sending code to a hosted Cline service?

Yes. Cline runs in your IDE or terminal, and you choose the model provider, including local providers. Your privacy depends on the provider path you configure.

Looking for more

Other ways to replace GitHub Copilot, Gemini Code Assist, Cursor and Claude Code#

OpenCode

#1 in the Claude Code guide

Broad provider and model choice in a terminal-first client, MIT-licensed with AGENTS.md instructions

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oh-my-pi

#2 in the Claude Code guide

Direct Claude configuration inheritance with Anthropic subscription support

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kilocode

#3 in the Claude Code guide

Documented Claude transcript import with IDE and CLI surfaces

27,673

Goose

#4 in the Claude Code guide

ACP subscription bridge that reuses an existing Claude Code or ChatGPT subscription

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Who Cline is for#