TanStack's smaller React for the browser

#​495 — October 30, 2026 Read on the Web React Status Putting MUI, Mantine, Ant Design and React Spectrum Under Load Den Odell wanted to see how popular design systems cope when you give them real work, so he timed ten of them , including MUI, Mantine, Ant Design and React Spectrum, and profiled the slowest cases. "Performance belongs on the design system team's priority list, next to accessibility," he says. Some highlights: 📊 With the CPU slowed 4x, opening a 249-country dropdown took 84ms in Mantine and 134ms in Ant Design, but over 200ms in MUI and React Spectrum, both of which froze the

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