Cline

Cline is an open-source autonomous coding agent for VS Code, CLI, and SDK, free for individual developers. It plans, edits files, and runs terminal commands with your approval. Core capabilities include multi-file editing with linter-aware fixes, terminal command execution (dev servers, tests, deploys), plan-and-act modes, and support for any model (Claude, GPT, Gemini, local). It features checkpoints, one-click undo, .clinerules for coding standards, MCP server integration, multi-agent teams, and Slack/Linear/CI connectivity. Ideal for developers and solopreneurs working on large codebases, automation scripts, or CI pipelines.