Cline

Cline is an open source AI coding agent that works as one agent runtime across the places developers already work. The homepage presents four ways to use it: Cline for Desktop as a native app with no editor required, the IDE extension installed in the editor of choice, the CLI for terminal work from prompt to production, and the SDK for embedding the agent runtime that powers Cline in your own apps and products. The workflow is built around control. Cline can help a developer understand a codebase first, answering questions about how it is structured, its files, dependencies, and behavior, then move to coordinated multi-file edits with linter-aware fixes, diffs, checkpoints, and one-click undo on every step. Its Plan and Act design lets the user toggle Plan mode to align on a strategy, then Act mode to execute, approving every step or switching on auto-approve for autopilot work. The agent also runs bash commands in the terminal and reacts to output as it appears, handling long-running dev servers, tests, and deploys live rather than as a separate handoff. Model choice is a central part of the pitch. Cline is presented as open source with no vendor lock-in, working with Claude, GPT, and Gemini, local models through Ollama or LM Studio, or any OpenAI-compatible endpoint, with the user bringing their own key or their own weights. Teams can ship .clinerules with a repo to teach the agent coding standards, architecture, and deployment conventions, and can extend it with MCP servers and plugins, registering custom tools and lifecycle hooks via the SDK for databases, APIs, and infrastructure. It also connects to Slack, Discord, Telegram, and Linear, runs headlessly inside GitHub Actions, GitLab, or any pipeline, and supports multi-agent teams where coordinator agents delegate to specialists, including scheduled runs on cron for recurring automations. The homepage reports trust from more than 11 million developers and an additional details rating of 4 out of 5 from 328 ratings. It suits developers and teams who want an inspectable, model-flexible coding agent they can run in an editor, a terminal, or their own products, with planning, approval, and undo kept close to the work.