Cursor
VS Code fork with deep AI editing, multi-file context, and a powerful agent mode. The most popular AI editor by mindshare.
Devin
Cognition's autonomous AI engineer that plans, codes, tests, debugs, and opens PRs unattended. Now shipped alongside Windsurf (acquired July 2025) as the async half of Cognition's stack — Devin runs async tasks, Windsurf is the in-editor surface.