A native macOS trading platform

Pro-grade active trading. Native on Mac.

The execution power of the Windows trading desks, running native on the Mac. Direct-routed orders, live Level 2, and a hotkey engine that keeps up with you — and no Windows VM anywhere in the picture.

Subito Trader workspace — L1 quotes, order entry, order book, time and sales, positions

The problem

Serious trading tools skipped the Mac.

The desktop platforms active traders live in are Windows-only, and they look it. To run one on a Mac you're stuck with Parallels, a spare Windows box, or a remote desktop — babysitting a virtual machine just to route an order. The tools still work. They just haven't been redesigned since the 2000s.

Windows-locked The pro desktop tools don't run natively on macOS. Virtualization adds latency and one more thing to break mid-session.

Dated interfaces Inconsistent fonts, 90s color, cramped layouts. Powerful software that shows its age every second you're looking at it.

Built for the platform, not for you There's a setting for everything, but wiring it up is a chore — and hotkeys, the thing you lean on most, are the worst of it to build and keep straight.

What it is

A modern, native platform built the way active traders work.

Subito Trader is a native macOS app for US-equity day and swing traders. Connect the brokerage account you already have — paper to practice, live to trade — pull real-time Level 1 and Level 2, and drive all of it from a hotkey engine you can shape to your setup. Everything the desktop tools do, rebuilt to feel like it belongs on a Mac.

Capabilities

Hotkeys, done properly

Bind any action — buy, sell, cancel, flatten — to any key. Build them in a visual editor or straight in JSON, conditional logic and all, without the setup turning into a second job.

F1 — Buy 100 @ Ask

Hotkey Editor — Buy at Ask action with keyboard binding, quantity and limit-price expressions, variables rail

Level II — bid and ask depth with MMID columns and size heat

Order Book — price ladder with size bars, route and side controls

Live Level 2 depth

A full market-depth ladder with ECN identifiers, sorted, with size heat and flash-on-update — so you can read order flow fast. It stays smooth even when the tape is really moving.

Trade straight from the book — single-leg, bracket, and OCO — with live-mode guardrails built in, so a live order never sneaks up on you.

Workspaces, across every display

Lay out L1, L2, Time & Sales, order entry, and positions anywhere on a free-form canvas, then save the arrangement as a workspace and switch to it instantly. Link widgets by color channel so they track the same symbol. Workspaces span every monitor you run and remember exactly where each window sat — real multi-monitor behavior on the Mac, which usually treats it as an afterthought.

Display 1 — full montage: L1 quotes, order entry, order book, time and sales

Display 1 — montage

Display 2 — Order Book, Level II, order entry, Time and Sales, watchlist

Display 2 — execution

04 Native macOS performance Written in Swift for Apple Silicon. Not Electron, not a cross-platform port — a Mac app that runs like one.

05 Multiple brokers supported Route single-leg, bracket, and OCO orders through the brokerage account you already have, over a local gateway.

06 Make it yours Pick from built-in color palettes or build your own. Density and font-size settings resize every panel together.

Who it is for

For traders who live in the montage.

Built first for the day and swing trader who direct-routes, watches Level 2 to follow order flow, and puts up dozens to hundreds of orders a session across a wall of monitors. If you've been waiting for a reason to drop the Windows VM, this is it. And if you're coming up from Webull or Robinhood, you'll feel the difference the first time you use it.