BlogJanuary 25, 2026

Once UI is open source. Here’s how we plan to keep it that way.

Once UI is open source. Here’s how we plan to keep it that way.
Software has never been easier to produce.
We can generate interfaces in minutes, scaffold entire products in hours, and ship faster than teams could a decade ago. AI accelerates this even further — not by replacing creativity, but by removing friction between idea and execution. That part is real, and it’s a gift.
But something subtle happened along the way.
As code became easier to create, it also became easier to duplicate without understanding. Patterns spread horizontally. Abstractions pile up. Systems grow outward instead of deeper. What looks like speed today quietly becomes debt tomorrow.
The problem isn’t AI.
The problem isn’t reuse.
The problem isn’t even complexity.
The problem is loss of structure.
Most modern frontends aren’t slow because they’re big. They’re slow because no one can reason about them anymore. Layout decisions are scattered. Styling logic branches endlessly. Components look reusable, but behave differently depending on context. The system works — until it doesn’t — and when it breaks, no one knows where to look.
Once UI exists because we believe speed and quality are not opposites. They’re leverage when structure is treated as a first-class concern.
Trademark
Trademark
Once UI is often described as a design system or a component library. That’s technically true, but it misses the point.
Once UI is not a collection of parts. It’s a constraint system.
It starts from a simple assumption: design and code are not separate disciplines — they are the same system, expressed in different languages. Layout is semantic, not decorative. Styling should converge toward shared meaning, not fragment into local decisions. Defaults should encode intent so that you don’t have to re-decide the same things on every screen.
This is why Once UI feels different to use.
Not because it’s more flexible, but because it deliberately removes entire categories of choice that don’t compound. You don’t configure spacing from scratch. You don’t invent layout logic per page. You don’t glue together five mental models just to render a card consistently.
This matters even more in an AI-assisted world.
If AI is helping you write code, then readability, consistency, and semantic structure are no longer nice to have. They’re the difference between a system you can evolve and one you can only regenerate.
Once UI is built for people who want AI to extend their thinking, not replace it. For developers and founders who still want to read the output, understand it, and shape it — not accept a thousand lines of opaque utility classes as the cost of speed.
Trademark
Trademark
A system like this cannot survive behind closed doors.
Design systems don’t fail because they’re incomplete. They fail because they can’t be questioned. When assumptions are hidden, they harden. Edge cases get patched instead of resolved. Complexity doesn’t disappear — it leaks into user code.
Once UI is open source because it needs pressure.
Pressure from real usage. From disagreement. From people building things we didn’t anticipate. From developers who push the system until it breaks — and then help fix it.
Open source is not a distribution strategy for us. It’s a quality control mechanism.
We don’t gate the core because the core is the infrastructure: layout primitives, tokens, interaction logic, system-wide conventions. Gating that would turn Once UI into something you rent, not something you build on.
This is also why Once UI is not a template factory.
We do release templates — but they’re not abstract UI kits. They’re solutions to real problems: portfolios that communicate identity, documentation that transfers knowledge instead of repeating it, landing pages built with real intent, and community surfaces that create belonging instead of FOMO.
We’re not drawing boxes. We’re shipping systems that are meant to be used, modified, and understood.
That only works if the foundation is open.
Trademark
Trademark
Open source doesn’t fail because it lacks value. It fails because it lacks stability.
Once UI is already supported by its community. Thousands of projects use it. Over a thousand portfolios are live. Nearly 150 individuals and teams support Pro yearly because it saves them time, cognitive load, and rework.
The question isn’t whether Once UI can sustain itself. The question is how it keeps doing that without distorting the essence.
Paywalls distort incentives. Burnout does too.
Sponsorship, for us, is not a fallback — it’s an architectural decision. A way to fund infrastructure without compromising it.
We’re not offering ads or banner placements. We’re looking for aligned partners: tools we already rely on, integrate with, and believe in. In return, sponsors are visible where builders actually think — inside documentation, inside real workflows, inside long-form explanations of how systems fit together.
Not exposure at scale, but exposure at depth.
To indie developers, founders, and builders who care about quality, speed, and longevity at the same time.
Once UI will remain open, opinionated, and system-first. Not because it’s easy — but because that’s the only way software built to last survives.
If you’re building tools with long-term intent — and you care about how systems hold up under real use — we’d like to talk.
Not as a pitch. As a shared problem worth solving.
Let's talk!
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