ai-pair-programming
(2)
Cline
Cline is an open-source, autonomous AI coding agent that runs inside VS Code and other editors. It reads a codebase, plans changes, edits files across a project, runs terminal commands, and drives a browser - asking for the developer's approval at each step. Built to be transparent and model-agnostic, it lets teams bring their own API keys or run local models, and has grown into one of the most-installed AI coding tools with a Fortune 500 enterprise offering, Cline Teams.
Cursor
Cursor is an AI-first code editor built by Anysphere, a San Francisco startup founded in 2022 by four MIT graduates. Originally a fork of Visual Studio Code, Cursor has evolved into a full agent-based development platform where autonomous AI handles everything from autocomplete to end-to-end feature building. With $2B+ in annualised revenue, over half the Fortune 500 as customers, and a valuation that reached $29.3B after its Series D in November 2025, Cursor has become the fastest-growing SaaS company ever from $1M to $500M ARR - turning the IDE from a code-writing tool into an AI orchestration layer.