UI Arc

Notable signal

Open-source React components that feel finished

Launched 1d ago

Signal

Velocity

What this means

30%Vote pace is below typical for Developer Infrastructure.

Running at 30% of comparable launches.

-40%Category cooling: Design resources.

Launches down 40% week-over-week.

16Founder Conviction Index: 16 — low signal.

Few of the conviction sub-signals (reputation, velocity, buyer-intent, tagline clarity) are firing yet.

Prediction

Top-5 finish probability

today

Projected end-of-day votes

18range 14–24

Trajectory

stable

Vote pace holding steady.

Speed vs peers

0.3×

13 Developer Infrastructure launches

About

Arc is a library of React components and blocks with motion built in. The core is free and open source (MIT) and installs with the shadcn CLI, so the code lives in your project and you can change anything. Every component has Markdown docs, llms.txt and an MCP server, so Claude Code or Cursor can pick and install the right piece instead of inventing one. Pro adds showpiece motion components and full app screens. New components ship every day.

AI Summary

UI Arc is an open-source library of React components that integrates motion and is installable via the shadcn CLI. The core library is free under the MIT license, with additional features available in the Pro version.

Attention & discussion velocity

Performance

Velocity0

Vote pace vs average

Momentum0

Sustained over 6h

Virality0

Spread × engagement

Engagement67

Discussion per unit of attention

Editorial read

Scored deterministically. Only candidates that fire a story trigger are sent to a model, so this one has no written angle.

ThinLittle evidence and no strong angle. Nothing to build on yet.

105/8

Timeliness5%94

carried 7%

Trend20%33

carried 27%

Novelty15%22

carried 20%

Business15%20

carried 20%

Story20%0

carried 27%

Not measured · 3 of 8

Revenue10%—

Founder10%—

Cross-platform5%—

Gaps in our data, not findings about the product. Their weight is redistributed across the 5 we did measure.

measuredmeasured, zeronot measured

Full audit →

Signal sources

3 of 6 active

Launch tracking8 readings since we picked it up
AI analysisDeveloper Infrastructure
Comment intelligencethread not yet analysed
Outside discussionnot checked — domain is a storefront or shared
Revenue signalsno match on this domain
Editorial scoring10% evidence coverage

A source that found nothing is a measurement. A source that has not run is a gap. Neither means the launch lacks the thing.