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Cline

Free tier

The open-source AI coding agent for your IDE, terminal, and SDK

Free tier available·All audiences·Powered by Bring Your Own (Claude, GPT, Gemini, Ollama, LM Studio, OpenAI-compatible)·API available·Open source
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Key strengths

Model-agnostic: supports Claude, GPT, Gemini, Ollama, and any OpenAI-compatible endpointOpen source (Apache 2.0) with 63k+ GitHub stars and 8M+ installsRuns across IDE (VS Code), terminal CLI, and embeddable SDKPlan-and-Act mode with per-step approval and one-click undoExtensible via MCP servers, custom tools, and multi-agent orchestration
Free tier + paid plans
Self-hostable
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Cline is a single open-source agent runtime (Apache 2.0) that exposes three consumption surfaces: a VS Code IDE extension, a globally installable CLI (npm i -g cline), and an embeddable SDK for custom product integration. It is model-agnostic, supporting Anthropic Claude, OpenAI GPT, Google Gemini, local Ollama/LM Studio instances, and any OpenAI-compatible API endpoint via bring-your-own-key or bring-your-own-weights. The agent runtime supports MCP (Model Context Protocol) for registering custom tools, database connectors, and infrastructure plugins, as well as multi-agent orchestration where coordinator agents delegate to specialists. It integrates natively with CI/CD pipelines (GitHub Actions, GitLab), chat platforms (Slack, Discord, Telegram), and project management tools (Linear).