The icon bar that sits across the bottom of modern desktop interfaces traces. Back to Acorn's Arthur operating system in. 1987, predating both NeXT's Dock and Windows 95's taskbar by years, according to. Former Acorn engineer Paul Fellows. The claim resurfaced this week on The Register, reigniting a long-running debate about. The true origins of familiar desktop UI conventions. This guide covers Which came first, Windows 95's taskbar or NeXT's Dock? Neither in detail. This guide covers Which came first, Windows 95's taskbar or NeXT's Dock? Neither in detail.
Windows 95 went on sale 31 years ago this summer, and the question of. Where its taskbar truly came from still draws heated responses from people who built it. Former Microsoft executive Joe Belfiore pushed back firmly on X, writing on August. 25, 2026: "The NeXT dock did NOT lead to the taskbar. Two things did: 1) Cairo team had been designing an always visible, bottom-of-the-screen 'tray' ... which was a drop target for files, text-content, etc… to facilitate easy transfer. Of stuff from one place/app to another…". The Cairo project was Microsoft's object-oriented shell effort in the early 1990s.
Which came first, Windows 95's taskbar or NeXT's Dock? Neither: What Did Acorn's Arthur Actually Invent?
Fellows, who led Acorn's original Arthur project, told The Register he came up. With the bottom-of-screen icon bar deliberately as. A way to avoid lawsuits. "We were sat in a room thinking 'How do we design this to be different, so we don't get sued by Apple?' The Mac had a menu bar of text across the top, so we thought 'we can't go across the top, we'll have to go across the bottom – and we can't use text, so we'll have to use icons.' That's why it's like that," he said in a 2022 ROUGOL discussion. Celebrating RISC OS's 35th anniversary.
Arthur was the original ARM operating system for Acorn's first Archimedes computers, which shipped in 1987. The codename itself was an inside joke standing for "A Risc by THURsday,". Reflecting the team's optimistic development schedule. The Arthur desktop was originally intended only as a BASIC programming demo. But Acorn shipped it with the OS anyway. Version 2 arrived in 1989 under the more technical name RISC OS, though. The icon bar design persisted.
How Did This Idea Move from Acorn to Silicon Valley?
Fellows pointed to a page stating that Apple "acquired the Dock from Steve Jobs' NeXTstep OS, which stole it from Acorn's Arthur Operating System of 1987." He responded simply: "Damn right it did! Tragically, you couldn't patent software at that point." NeXT was founded in 1985, and NeXTstep's interface drew on multiple influences during its development. Acorn itself was wound down in 2000. But its RISC architecture lives on in billions of ARM processors powering everything. From smartphones to Apple's M-series chips.
What This Means for Tech Readers
For anyone interested in computing history, this dispute reveals how software ideas spread through informal channels, talks. And demos rather than patents or documentation. The bottom-icon-bar pattern became so standard that few users ever stop to ask where it originated. It also highlights how British computing in the 1980s produced foundational ideas. That later showed up in American products, often without acknowledgment. Belfiore's Cairo reference shows Microsoft had its own internal thinking on the problem. Separate from both Acorn and NeXT. Which is a reminder that convergent design problems often produce similar solutions independently.
What's Next
Expect the taskbar-versus-dock debate to resurface every few years, particularly around Windows anniversaries. Belfiore's thread has already inspired follow-up articles examining Microsoft's internal design lineage. And Acorn community events continue to document Fellows' role. The deeper question, whether software design conventions can or should be attributed to. Single inventors, remains unresolved, especially in an era. When AI training models ingest decades of UI design without attribution.
Key Points
Acorn's Arthur OS shipped in 1987 with the first known bottom-mounted icon bar Whether you are new to. Which came first, Windows 95's taskbar or NeXT's Dock? Neither or already experienced, the sections below have you covered.
Former Microsoft exec Joe Belfiore credits the Cairo team's drop-target tray
Paul Fellows led Arthur and claims deliberate reverse-engineering of Apple's menu bar
NeXT's Dock and Windows 95's taskbar both appeared years after Arthur
The Bottom Line
The next time you glance at the taskbar or dock at the bottom. Of your screen, you are looking at a design pattern. That a small British team invented in 1987 partly as a legal workaround. To avoid copying Apple's menu bar, three. Decades before most users ever noticed it.
Frequently Asked Questions
Who actually invented the bottom-of-screen icon bar?
Paul Fellows, who led Acorn's Arthur project, claims he designed the bottom icon. Bar in 1987 specifically to avoid copying Apple's top-of-screen menu bar.
Did NeXT copy the icon bar from Acorn?
Fellows believes NeXT's Dock borrowed the concept from Acorn's Arthur, though software could. Not be patented at the time. So no formal attribution was required.
Where did Windows 95's taskbar actually come from?
According to former Microsoft executive Joe Belfiore, the taskbar originated from the Cairo. Team's always-visible bottom-of-screen tray concept, not directly from NeXT.
Related Resources
For more context, check our related article on Windows 11 24H2 Home and Pro Editions Face Critical Security. Deadline in October 2026.
