Cline in brief
Cline is an open source coding agent from Cline Bot Inc. The project was created in July 2024 and is distributed through a VS Code extension, CLI, desktop app, JetBrains plugin, and SDK. Its GitHub repository lists the Apache License 2.0 and more than 70,000 stars. Cline’s July 2025 funding announcement says the company raised $32 million across seed and Series A rounds. The agent is built for developers who want to inspect code, edit files, run commands, and choose model providers. The same core supports editor work, terminal sessions, desktop use, and embedded applications. The client is free for individual developers, while AI inference can use Cline credits, ClinePass, or a developer’s own provider credentials.
Cline reads project files, writes code, runs terminal commands, uses a browser, and works with external tools. A typical task can begin in Plan mode, where the developer reviews an approach, then move to Act mode for implementation. The interface asks for approval before actions, while auto-approve can reduce interruptions. File edits appear as diffs, and checkpoints support undoing agent changes. Project rules in .clinerules files describe coding standards, architecture, testing, and deployment conventions. MCP servers add tools for databases, APIs, and infrastructure. Cline also supports plugins, skills, messaging connections, scheduled tasks, headless automation, and multi-agent workflows. The CLI supports interactive and headless operation, making the same agent available for local development, scripting, and CI work.
Cline still requires review of generated edits, shell commands, model output, checkpoints, and provider availability. Telemetry is enabled by default in the VS Code and JetBrains extensions, desktop app, and CLI, although users can turn it off. Requests made through Cline or ClinePass can include prompts and model responses in Cline’s handling of those providers, while requests using other providers go to those providers under their policies. Cursor is a closer commercial editor competitor, GitHub Copilot is closely tied to GitHub workflows, and Windsurf is another agentic coding product. Cline suits developers who want Apache-licensed code, provider choice, local runtimes, and explicit action approval. Teams wanting a managed editor subscription with bundled model access may prefer Cursor, Copilot, or Windsurf.