Drift

A worktree workbench for parallel, terminal-driven work and diff review.

Several working copies
You already have extra checkouts. You want them in one Workbench, not a pile of folders.
Terminals that stay
Each Workspace keeps its Terminals while you work in another.
Review in the same window
Working Changes and Branch Changes sit next to the Terminal.

Stable for macOS

After you install Stable, Settings can put drift on PATH. Then drift . opens that folder in the Workbench.

Several working copies