Stop losing critical info to tab chaos. On-Top turns websites into always-on-top windows that float above every app—even full-screen. Create custom workspace layouts with multiple URLs side-by-side, save configurations, and switch contexts instantly. Perfect for traders monitoring markets, developers referencing docs, creators watching streams, or anyone needing peripheral awareness without context-switching. Native macOS app built with Rust + Tauri. Windows and Linux coming soon.
Hey Product Hunt,
I'm Elizabeth from CrabNebula. We built OnTop because we were losing our minds.
Here's what kept happening:
We'd be deep in code, then realize we hadn't checked the client Slack in 45 minutes. Or we'd finally get into flow state and think "wait, did that dashboard alert go off?"
Monitoring dashboards buried under your IDE. Project specs somewhere in those 47 browser tabs. Client messages hidden while you're in Figma.
Every 10 minutes: "I should probably check..."
That's not focus. That's just anxiety.
So we built something simple
OnTop lets you keep websites visible on top of everything else. Think of it like a car dashboard—you're not staring at it constantly, but you can glance up and know everything's fine. Then get back to work.
We used it internally for months. Turns out it actually worked. So now we're releasing it.
What it does:
Create "workspaces" with multiple websites arranged however you want—split screen, grid, whatever. These windows float above everything, even full-screen apps. Save your setups and switch between them.
Built it with Rust and Tauri because that's what we do at CrabNebula (we work on Tauri itself, so this is very much eating our own dog food).
Who's it for?
Honestly, anyone who monitors web stuff while working:
Traders keeping an eye on markets
Developers with docs open constantly
Support teams juggling tickets and Slack
Streamers watching chat and analytics
Anyone who's tired of Alt+Tabbing every 3 minutes
Pricing:
5.99 + Tax /VAT
We're doing 2 EUR off for Product Hunt—use code PH2 at checkout (good until Dec 24).
One thing: We're macOS only right now. We wanted to get it right on one platform first. Windows and Linux are possible if people actually want this on other platforms—let us know.
What we're wondering:
Would this actually help your workflow? What would make it more useful? What are we missing?
Thanks for checking it out.