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Megabit/Blazorise
Blazorise is a component library built on top of Blazor with support for CSS frameworks like Bootstrap, Tailwind, Bulma, AntDesign, and Material.
Blazorise is a Blazor component library that wraps Bootstrap, Tailwind, Bulma, Material, AntDesign, and Fluent UI behind a single C# API. You write `<Button Color="Color.Primary">` once and swap the CSS framework by changing a NuGet package. Aimed at .NET teams building line-of-business apps who want to avoid rewriting markup when design requirements change.
The provider abstraction is the real value here — the same Razor components render correctly across six different CSS frameworks without touching your page code. The DataGrid is unusually capable for a free tier: virtual scrolling, batch editing, grouping, column chooser, and state management are all there out of the box. Active development (pushed three days ago) with 536 forks suggests a real community, not a side project. The extension ecosystem covers things you'd otherwise have to source separately — Gantt charts, rich text editor, PDF viewer, signature pad, cropper.
Dual-licensing is the elephant in the room: the free tier is source-available, not open source, and the boundary between what's free and what requires a commercial subscription is deliberately vague in the README. The Tailwind provider is weaker than the Bootstrap ones — Tailwind's utility-class model doesn't map cleanly to an abstraction layer, so you lose most of what makes Tailwind worth using. Provider parity is uneven; the Bootstrap 5 demo is the only Blazor Server demo listed, meaning Server-side testing of other providers is left to you. CSS framework version coupling is a real maintenance burden — you're locked to whatever Bootstrap/Material version Blazorise was tested against, and upgrading the framework independently will break things.