Changelogs, challenges, and stories from building Scopo, a project-aware window switcher for macOS.
Scopo's file search runs entirely on your Mac: 391,000 embedding vectors, searched on every keystroke. We shipped an HNSW index, hit a failure mode where files were indexed but unfindable, and ended up replacing the whole graph with a brute-force scan and 60 lines of NEON. It's faster where it counts, a quarter of the disk, and an entire class of bugs is gone.
Scopo's search box is now a full command bar: jump to any window or browser tab, launch apps, do math, search the web, ask AI, find files. And tiles picked up a browser habit: any windows can now share one tab strip. Here's what shipped and how the Free/Pro split works.
Scopo now tiles windows into clean split layouts with a keystroke or a drag. Unlike Rectangle or Magnet, every layout stays scoped to its Space, so if you split your work across Spaces, each one keeps its own arrangement. Plus new appearance controls to make Scopo look the way you want.
The built-in Cmd+Tab shows a row of app icons, so you are guessing which window is which. Here is why a macOS window switcher with live previews changes how it feels to move between windows, and how Scopo does it.
The Magic Trackpad earned its spot on my desk for one job: swiping between Spaces and wrangling windows. After a few weeks of using Scopo, I noticed it just sits there now.
Scopo started as a fix for my own pain. I work on several projects at once, and macOS kept throwing all of them at me every time I hit Cmd+Tab. So I built the switcher I wanted, then decided to share it.