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Dev tools · March 5, 2026

htmxRazor

Server-rendered UI components for ASP.NET Core with htmx

htmxRazor launched on March 5, 2026 with 5 votes, #1,928 of 23,380 launches that month and more than 75% of that year's launches.

What it does

htmxRazor is a complete UI component library implemented as Razor Tag Helpers. Every component renders clean, semantic HTML styled by its own CSS design system. No client-side framework required — just add htmx attributes to any component for dynamic behavior.

Server-rendered UI components for ASP.NET Core with first-class htmx integration. 90+ server-rendered components across 11 categories. Buttons, forms, date/time pickers, data tables, kanban boards, navigation, overlays, feedback, and more. Every component supports hx-get, hx-post, hx-target, hx-swap, and all htmx attributes natively. Light and dark themes via CSS custom properties. Toggle with a single attribute or JavaScript call. A date/time picker family, a radial category picker, and Playwright E2E back in CI. A rectangular trigger opens a circular pie of color- and icon-labeled category wedges. Picking a wedge repopulates a dropdown via an htmx cascade and auto-selects the first…from htmxrazor.com

Does a similar job

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    I love Streamlit but have run into many situation where taking it from PoC to MVP state is insurmountable. With all the recent HN hype around htmx and sematic html / classless css I decided to build a Streamlit alternative using these on top of FastAPI. This has a couple advantages: 1) easier to extend when you move past PoC since the FastAPI app is exposed (allowing adding more routes) and hstream acts more like a typical web stack 2) with htmx and html (plus MVP.css) doing the heavy lifting the package is alot less complex and easier to reason about - and hopefully more performant…

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