Cline

Cline is an open-source VS Code extension that turns an LLM into a practical coding agent with a tight human-in-the-loop workflow. It can browse and index your workspace, propose multi-file edits as diffs, create new files, run shell commands and dev servers, read outputs, and iterate until tasks pass—all while asking for approvals at key steps.

You choose the model (OpenAI, Anthropic, local) and set guardrails for what it can run or write. Typical flows include implementing features from a ticket, fixing failing tests, migrating frameworks, or bootstrapping new services. Because everything happens inside VS Code with explicit prompts and reviewable diffs, teams keep control and auditability without giving up the speed of an autonomous agent.