Cline

Overview

Cline is a popular open-source VS Code extension that turns the editor into a fully agentic coding surface. It reads files, runs terminal commands, edits across the repo, and shows every step in a side panel so you can approve or reject as it goes. BYO API key for Anthropic, OpenAI, OpenRouter, or local models via Ollama.

Best for

Best for
Engineers who want Cursor-class agent power without leaving stock VS Code

Use cases

• Run a long autonomous task inside VS Code with visible step-by-step approval
• Use any provider key without paying a per-seat editor subscription
• Drive a local model via Ollama for offline work
• Pair with MCP servers for richer tool access from inside the editor

Notes

Why it matters

Cline broke the assumption that you need a forked editor to get a serious coding agent. It runs inside stock VS Code, supports MCP, and charges nothing beyond what the model provider charges you.

How teams use it in production

Pair Cline with an OpenRouter key and you have a model-agnostic coding agent your finance team can reason about. Use approval gates aggressively while you build trust, then loosen them per repo.

What to watch

The split between hosted editors (Cursor, Windsurf) and BYO-key extensions (Cline, Continue, Roo Code) is the live question of 2026. Cline’s growth says plenty of teams want the latter.