Open-source designs for interactive + animated interactions
Once UI 1.5 is about bringing wonder back to UI engineering. We’re introducing new visual effects — weather, particles, matrix-style dots — all drop-in and usable in just a few lines of code. You also get a new generation of chart types built for live data and real-time dashboards. Only in Once UI. A toolkit for indie builders who want their product to feel alive, expressive, and unmistakably theirs.
Thanks for stopping by.
Once UI 1.5 grew out of the same curiosity that drives https://designengineers.club — experiments in motion, mood, and how interfaces feel, not just how they look.
This update is our step toward more expressive, living interfaces: weather systems, particle fields, new forms of charts for real-time data.
Ask me anything — happy to share the thinking behind it.
About Once UI 1.5 on Product Hunt
“Open-source designs for interactive + animated interactions”
Once UI 1.5 launched on Product Hunt on December 2nd, 2025 and earned 311 upvotes and 21 comments, placing #4 on the daily leaderboard. Once UI 1.5 is about bringing wonder back to UI engineering. We’re introducing new visual effects — weather, particles, matrix-style dots — all drop-in and usable in just a few lines of code. You also get a new generation of chart types built for live data and real-time dashboards. Only in Once UI. A toolkit for indie builders who want their product to feel alive, expressive, and unmistakably theirs.
On the analytics side, Once UI 1.5 competes within Open Source, User Experience, Developer Tools and GitHub — topics that collectively have 985.2k followers on Product Hunt. The dashboard above tracks how Once UI 1.5 performed against the three products that launched closest to it on the same day.
Who hunted Once UI 1.5?
Once UI 1.5 was hunted by Lorant One. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Lorant One