Most macOS terminals still force the same choice you had twenty years ago: one window, or a pile of tabs. Tabs hide context. Windows overlap. Neither one feels like a workspace. LayoutCLI takes a different approach — treat terminal panes like a canvas.
This post walks through the problem with tab-based terminals, why the usual split-view implementation hits a ceiling, and how collage-style layouts change the way you organize a project.
The Problem: Tab Fatigue
Modern development rarely involves a single command. You are watching a dev server,
poking a database, checking git status, and tailing logs — often at the
same time. With tabs, you can only look at one of those things at a time. You end up:
- Cycling through tabs to re-check something you just had on screen.
- Re-running commands because the output scrolled away while you were elsewhere.
- Losing your place every few minutes and paying the cost of rebuilding context.
- Opening a second window “just for this” and then not being able to find it.
Split views in most terminal apps help, but they stop at a single vertical or horizontal divider. Two panes is a real improvement over two tabs. It is also where most tools stop — anything more complex means juggling separate windows and dragging them around by hand.
Why Splitting Is Hard to Do Well
A naive split implementation forks the view into two children and calls it done. That works for the first split and falls apart after:
- Resizing re-flows everything. Nested splits with fixed pixel widths produce panes that collapse to nothing when the window shrinks.
- Processes get interrupted. If a layout change recreates the view, the shell underneath it may be restarted — which is unacceptable for a five-minute test run.
- Focus becomes ambiguous. With more than two panes, “the active one” needs rules, and the rules need to be predictable from the keyboard.
So the interesting engineering is not “can we show two panes?” It is “can we restructure the window without disturbing a single running process?”
The Solution: Collage-Style Layouts
LayoutCLI ships with presets that cover the way developers actually work:
- 2 Columns / 2 Rows — the classic split for keeping a command and its output side-by-side, or giving long output the full width of the window.
- 3 Columns — editor output, server logs, and a shell prompt in one glance.
- Grid 4 (2×2) — our signature collage: four real terminals in a single view.
- Custom grids — mix rows and columns freely and save any arrangement you build.
Switching layouts is instant and non-destructive. Panes keep running their processes while you rearrange them, so nothing is interrupted when you change shape. That property is the whole point: a layout change should feel like moving furniture, not like moving house.
State Preservation: Why Rearranging Is Safe
The reason we can rearrange without interruption is that layout is data, not view structure. Each pane owns its PTY and its scrollback; the layout is a separate description of how those panes are arranged on screen. Changing the layout changes the description, and the same pane objects get re-parented into the new arrangement.
Practically, that means you can start a four-minute build, decide you would rather see
it full-width, switch from Grid 4 to 2 Rows, and the build never notices. The same holds
for a database session mid-query or a tail -f that has been streaming for an
hour.
The UX: Real Panes, Real Shells
Every pane runs a real PTY shell process — not a simulated prompt. That means tab
completion, history, ctrl-c, full-screen programs like vim and
htop, and ANSI-colored output all behave exactly as you expect. If you have
to remember “this terminal is different,” the abstraction has already leaked.
Panes can be renamed, reordered, and focused with the keyboard. A quick shortcut jumps focus between neighbors; another splits the focused pane again. Within a day the mouse becomes optional.
Focus Management: Making Many Panes Feel Small
The failure mode of a powerful layout system is a window you are afraid to touch, because you can no longer tell where your typing will land. We handle that with a few firm rules:
- One pane is always visibly focused. The active border is unmistakable, even in a 2×2 grid.
- Focus moves on a grid. Arrow-key navigation follows the visual layout, so “left of here” means what your eye expects.
- Splitting inherits focus. The new pane, not the old one, becomes active — because you just asked to work there.
These rules sound trivial until you use a tool that does not have them. Predictable focus is what makes four panes feel like a workspace instead of four things competing for your attention.
A layout should adapt to your work — not the other way around.
Try the Grid Layouts Yourself
Download LayoutCLI and turn your tab pile into a workspace. The free plan includes basic splits, and Pro unlocks larger grids, custom layouts, and saved arrangements — see the plans here.