Agent-Up is an open-source, cross-platform desktop app for running and reviewing multiple AI coding agent workspaces on the same machine. It is built specifically for web application development, where each agent needs more than just an isolated source tree — it needs an isolated runtime.
Every agent workspace in Agent-Up gets its own processes, stable ports, isolated Docker services, a dedicated browser session, grouped browser tabs, and its own logs and runtime state. Agents manage their environments through MCP. You review them all in one place.
The problem
Git worktrees solve source code isolation well. When you give each agent its own worktree, their changes stay separate and can be reviewed independently. But worktrees do not isolate running applications.
When several agents work on the same web app simultaneously, each may need to run a different version of the full stack at the same time. Without additional tooling, that quickly becomes unreliable:
