Cline (formerly Claude Dev) is a popular VS Code extension that lets you run an AI coding agent directly inside your editor. It handles file edits, terminal commands, and web browsing in a tight IDE loop. For a solo developer working in one repo, it covers a lot of ground.
Fleet solves a different problem. It runs outside any IDE, on your server or dev machine, and coordinates an entire roster of Claude Code agents — a developer, a reviewer, a release manager, a PM — each with its own role and run-time budget. When one agent finishes, Fleet hands work to the next via its fabric event bus.