Cline is the open-source coding agent that defined the in-editor agent category, with 5M+ installs across VS Code, JetBrains, and Cursor itself. Its Plan/Act modes separate thinking from doing — the agent proposes a plan you approve before it touches files or runs commands. Apache-2.0 licensed with full bring-your-own-key model freedom, MCP integration, and deployment options up to on-prem and air-gapped for enterprises.
Bars show editorial scores from hands-on testing. Percentages showCline's live community win rate in head-to-head votes.
Runs on: VS Code · JetBrains IDEs · CLI · Cursor / Windsurf (as extension)|Best for: Developers who want a powerful, safety-gated agent inside the editor they already use
Cline runs on Standard Compute
Yes — Cline is Apache-2.0 open source with no subscription. You bring the model: any API key, a local model, or a flat-price plan with no usage limits via Standard Compute, which neutralizes Cline's main cost complaint (heavy token usage on big tasks).
Agentic coding inside the editor you already use, with safety: its Plan/Act flow shows you the plan before any file is touched or command run. It's the most popular way to get Claude Code-style agent capability without leaving VS Code.
Cursor is a polished paid editor with AI built in; Cline is a free, open-source agent you add to your existing editor. Choose Cursor for the smoothest all-in-one experience; choose Cline for model freedom, transparency, and zero subscription. Plenty of developers run Cline inside Cursor and use both.