Arc Browser Alternative: Horse Browser for ADHD Minds

Arc Browser tried something different. It introduced Spaces, Boosts, and a sidebar-first approach to browsing. For a lot of people — especially tech enthusiasts — it felt like a step forward from Chrome's tab strip. Then it stopped receiving updates. The team shifted focus to a different product. And a lot of Arc users started looking for alternatives.

If you're one of them, and especially if you have ADHD or think in non-linear patterns, I want to explain why Horse Browser isn't just an Arc alternative — it's a fundamentally different approach to the same problem Arc identified but didn't fully solve.

Arc recognized that the traditional tab bar is broken. It moved tabs to a sidebar, introduced workspaces (Spaces), and let you customize the interface. These were real improvements. For the first time, a mainstream browser acknowledged that Chrome's design doesn't work for everyone.

If you used Arc and loved the sidebar, the spatial organization, and the feeling of a browser that respected your workflow — you'll understand why Horse Browser exists.

Arc improved the container for tabs, but it still used tabs. A Space in Arc is essentially a tab group with a different UI. The fundamental mechanism — each page is a hidden tab you track by memory — didn't change.

For ADHD brains, this matters. The problem with tabs isn't where they're displayed (top bar vs sidebar). The problem is that tabs are flat, hidden, and rely on working memory to track. Moving them to a sidebar makes them slightly more visible, but it doesn't solve the core issue: when you click a link, your previous context disappears.

Arc also became increasingly complex. Boosts, Easels, Notes, Little Arc, Max — features accumulated faster than most users could learn them. For neurodivergent brains that need predictability and calm interfaces, complexity is the opposite of what helps.

Horse Browser doesn't improve tabs. It replaces them with Trails.

When you click a link in Horse Browser, it doesn't replace what you're looking at or open in a new tab. It branches off — visually, in the sidebar, showing the connection between where you were and where you went. Your entire browsing session becomes a tree of connected pages, not a flat list of disconnected tabs.

This isn't a UI preference. It's a different model of how browsing works:

Arc: Pages are organized into containers (Spaces). You switch between containers. Within each container, pages are flat tabs.

Horse: Pages are connected by how you got to them. Click a link from Wikipedia → the new page branches off Wikipedia in the sidebar. Click another link → it branches again. Your path is always visible. You can follow any rabbit hole and the path back is right there.

A psychotherapist who recommends Horse Browser to ADHD clients calls this "externalizing executive function" — the browser holds the structure of your thinking so your brain doesn't have to.

If you used Arc because Chrome was overwhelming, Horse Browser addresses the underlying cause of that overwhelm — not just the symptoms.

Too many tabs isn't a discipline problem. It's what happens when your browser hides everything and your ADHD brain compensates by keeping things open. Trails keep everything visible by default, so there's nothing to compensate for.

Task paralysis happens when you can't decide which of thirty identical-looking tabs to focus on. Trails have hierarchy — you can see which page led to which, collapse what you don't need, and focus on one branch without losing the others.

Out of sight, out of mind is literal for ADHD brains. Arc's Spaces still hid pages behind container boundaries. In Horse Browser, collapsing a trail doesn't delete it — it just tucks it away. Expand it and everything is exactly where you left it.

You might miss: Boosts (custom CSS per site), Split View, built-in AI features, the sleek aesthetic.

You won't miss: Tab clutter. Context loss. The anxiety of losing your place. The mental overhead of managing Spaces. The feeling that the browser is designed for someone with a different brain than yours.

Horse Browser is intentionally simpler than Arc. It does one thing — Trails — and it does it in a way that makes browsing feel calm. Built-in ad blocking, minimal UI, notes attached to trails, and an organization system that mirrors how your brain actually explores: branching, connecting, coming back.

I'm Pascal Pixel, and I built Horse Browser because I have ADHD and twenty years of failed productivity hacks taught me that the tool was the problem. Arc came close to acknowledging this, but it was built for tech power users, not for neurodivergent brains.

Horse Browser is built specifically for people who think in connections instead of sequences. If that's you — if your brain naturally branches and connects and follows tangents — it was designed for your brain.