You’ve probably noticed it. Every new UI framework feels like a bloated monster. Electron apps that chew through 500MB of RAM just to show a chat window. React Native builds that take five minutes. Webpack configs that look like a tax return. It’s madness. And somewhere in the back of your mind, you wonder: Does it really have to be this complicated?
The answer is no. And developer onuelito just proved it with a project called libaui — a GUI toolkit built from scratch using only two low-level libraries: xcb (the X protocol C binding) and freetype (font rendering). No Electron. No React. No Webpack. Just a Makefile, an OpenBSD system, and a hacker’s will to understand the machine.
We’ve been told we need millions of lines of code to make a button. That’s a lie. The truth is, a functional UI can be rendered with a few hundred lines of C, a window manager protocol, and a font rasterizer. Everything else — the virtual DOM, the reactive state management, the hot-reload servers — is a convenience that has become a crutch.
Let me walk you through what this project actually does. It creates a window, draws text, handles keyboard and mouse input, and lays out UI elements. All using xcb to talk directly to the X server and freetype to render glyphs. No abstraction layers, no shadow DOM, no event delegation. Just raw communication between your code and the display hardware.
And here’s the twist: the hardest part isn’t the complexity — it’s the simplicity. You have to understand the fundamental mechanics of how a pixel gets to the screen. You have to think about coordinate systems, font metrics, and event loops. It’s like learning to cook after a lifetime of TV dinners. Yes, it takes more effort. But the food tastes better.
This is the hacker ethos that built the internet. The same spirit that drove people to write their own operating systems, design their own chips, and roll their own encryption. It’s not about efficiency — it’s about ownership. When you build a GUI from scratch, you own every pixel. You know exactly why a button is 24 pixels wide and not 25. You understand the trade-offs. And that understanding is priceless.
Now, I’m not saying you should ditch your React app tomorrow. But I am saying that the next time you’re debugging a 3000-line TypeScript file, you should ask yourself: What am I actually gaining from all this abstraction? The only thing modern frameworks abstract away is your understanding. They give you speed at the cost of insight. And for many developers, that trade-off is a trap.
Look at the libaui example. It runs on OpenBSD with a few dependencies. It compiles in seconds. It doesn’t need a node_modules folder larger than the Linux kernel. It’s a reminder that the emperor has no clothes. That the whole web stack — with its polyfills, transpilers, and bundlers — is a house of cards built on assumptions we no longer question.
Building a GUI from scratch is like learning to cook after a lifetime of TV dinners. You’ll burn a few things. You’ll make mistakes. But you’ll never look at a microwave meal the same way again.
So here’s my challenge to you: Spend a weekend with xcb and freetype. Write a simple window. Draw a button. Handle a click. You’ll be frustrated. You’ll be confused. But somewhere in that process, you’ll feel something rare: the joy of understanding exactly how the machine works.
The next time you feel lost in a sea of dependencies, remember: somewhere, on an OpenBSD machine, a developer is building a GUI with two libraries and a Makefile. And they’re having more fun than you.
FAQ
Q: Isn't this just a toy project? Can you really build a production-ready GUI this way?
A: It's a toy by modern standards, but that's the point. The project shows that the core of any GUI—rendering, input, layout—can be done with minimal dependencies. Building a production app would require more (e.g., windowing, accessibility, theming), but the foundation is shockingly simple. The question is: do we need the bloat, or is it just habit?
Q: What's the practical takeaway for a typical web developer?
A: You don't have to rewrite your stack. But the next time you're fighting a build tool or a framework bug, remember that the underlying reality is simpler than the abstraction suggests. Understanding the low-level layer makes you a better debugger, a more confident architect, and less likely to cargo-cult solutions.
Q: Aren't modern frameworks objectively better for productivity?
A: Yes, for certain tasks. But the productivity gains come with a cost: you lose the ability to reason about the system. This project is a counterpoint—it proves that the complexity isn't inherent. It's a choice. And sometimes the choice to go simple is the most productive long-term decision, because it builds genuine understanding instead of reliance on black boxes.