Open as Many Windows as You Like

For four years, Horse ran in exactly one window. Not because one window is purer, or more focused, or somehow better for your brain. It was a limitation, plain and simple: the whole browser was wired straight from one strip of chrome to one page, and cloning that cleanly was genuinely hard. We never dressed it up as a feature. We just couldn’t do it yet.

Now we can. Press ⌘+N and another Horse appears. Or right-click any Trail and send it straight to its own window. One on each monitor. One for the project you’re buried in. One for the forty tabs you opened "to read later" and will absolutely get to eventually (we see you).

Every window reads and writes the same Trail tree. Rename a Trail in one and it’s renamed in all of them. Nothing forks, nothing goes missing, and there’s nothing to sync because there’s nothing separate being kept apart.

But each window keeps its own place in that tree. You can be six links deep into research on the left screen and parked on a dashboard on the right, and neither one forgets where it was. They share the map. They don’t share the cursor.

Doing it properly meant rebuilding how Horse draws itself. The old browser was one renderer doing everything at once: the toolbar, the Trail sidebar, and the website you’re actually reading, all stitched into a single surface. Cloning that surface cleanly was the wall we kept walking into.

Now every window runs those as three separate native views. Windows open faster, the interface stays responsive while a heavy page grinds to life, and your current Trail starts loading before the chrome has finished painting. A new window shows you something the instant it appears, instead of a blank rectangle staring back at you.

You’ll notice this update calls itself 3.0, not 0.78. We didn’t skip anything, and it isn’t a typo.

Here’s the plain version. Horse has been a real, paid, code-signed product since early 2023, and the whole time we kept numbering it like a hobby project someone left running over a weekend. 0.4. 0.6. 0.77. For three years we shipped a grown-up browser behind a number that quietly said "not ready yet."

So we went back through every release and counted honestly. The day Horse became something you pay for and trust with your whole day was a 1.0. The day pages became Trails, a map of your actual thinking, was a 2.0. Multi-window is a 3.0. We undersold ourselves for three years. We’re done doing that.

There’s now a Beta channel in Settings. Stable stays tested and boring, in the good way. Beta hands you the next thing first, rough edges and all. Pick whichever Horse you’d rather ride.

Multi-window is live today. Open Horse, press ⌘+N, and put one on every screen you own.