Bootstrap published its first v6 alpha on October 8. CoreUI v6 followed with its first alpha two weeks later. CoreUI has been built on Bootstrap from the start, so the obvious question is how close the two v6 lines are.

The short answer: as close as we could make them, with a list of deliberate exceptions. For every file we share with Bootstrap we follow one rule. Class names, CSS custom properties, options, events and public methods stay the same as in Bootstrap wherever we can manage it, so moving from one to the other does not mean rewriting markup. The code behind those names is a separate question. Where we can do better than Bootstrap without changing a name, we do. Where following Bootstrap would cost our users a migration step that buys them nothing, we don’t.

This post goes through all three cases: what we took, what we left out, and where we kept the name but changed what is behind it.

The first alpha of CoreUI v6 is on npm. It covers three packages: CoreUI PRO for Bootstrap (@coreui/coreui-pro), for React (@coreui/react-pro) and for Vue (@coreui/vue-pro), each published as 6.0.0-alpha.0 under the next tag. The free editions and Angular follow in later alphas.

Two weeks earlier the Bootstrap team published the first Bootstrap 6 alpha. CoreUI has always been built on Bootstrap, and v6 follows the same architecture: cascade layers, a token map per component, theme classes and colours computed in the browser. Where a class, token, option or event exists in both libraries, it almost always has the same name. What we took from Bootstrap 6, what we did not take and why is the subject of a separate post. This one is about what v6 gives you.

It is an alpha. The API can still change before the release candidate, so pin the exact version and keep it out of production for now.

Integrating CoreUI Pro into an Angular enterprise application requires a strategic approach to handle professional components, private registries, and scalable architecture.
As the creator of CoreUI, I have architected dozens of enterprise-grade dashboards using this exact workflow. The most efficient and modern solution involves configuring a private registry for the Pro packages and leveraging standalone components for a lean, high-performance bundle.
By following this guide, you will ensure your application is built on a reliable foundation with access to advanced features like the Smart Table.

Shipping an internal tool or admin panel faster is rarely about writing more code — it is about writing less of the infrastructure code that every screen depends on but none of the product requirements mention. CoreUI Pro Next.js Boilerplate is built on that premise: it is not a starter template with polished screenshots, but a production-oriented application foundation with authentication, RBAC, and the structural patterns teams otherwise spend weeks assembling before touching a single product feature. That changes the buying criteria. Instead of comparing screenshots, teams should compare delivery speed, maintainability, access control, and how quickly the first real screen ships.

Building a custom calendar in Angular is a common requirement for applications involving scheduling, booking, or event management.
As the creator of CoreUI, I’ve designed and implemented numerous calendar systems ranging from simple date pickers to complex resource schedulers. The most efficient and modern approach involves leveraging TypeScript’s Date object to calculate month structures and using CSS Grid for a responsive, accessible layout.
While building from scratch is great for learning, for enterprise-grade applications, using a battle-tested library like CoreUI can save weeks of development time.

Building a functional and performant Kanban board in Angular is a common requirement for project management and CRM applications. As the creator of CoreUI, I have built dozens of drag-and-drop interfaces for enterprise-grade dashboards. The most efficient and modern solution is to leverage the @angular/cdk/drag-drop module, which handles the complex physics and accessibility of moving items between lists. By combining this with CoreUI components, you can create a board that is both highly functional and visually polished.

Building a robust e-commerce cart is a fundamental requirement for any online storefront, yet managing state effectively across multiple components can often become complex. As the creator of CoreUI, I have architected numerous enterprise-level e-commerce systems using Angular since its early versions. From my expertise, the most efficient and modern solution for Angular applications is to leverage a singleton service combined with Angular Signals for reactive state management. This approach ensures that your cart data is synchronized across the entire application without the overhead of heavy state management libraries.

Customizing a UI framework to match your brand’s unique identity is a critical step in professional web development. As the creator of CoreUI, I have designed our React components to be highly flexible and easy to theme. The most efficient and modern way to customize the CoreUI theme in React is by overriding Sass variables before compilation or using CSS custom properties (variables) for runtime adjustments. This approach ensures that your changes are consistent across all components while maintaining the performance and reliability of the library.

Extending components is a fundamental requirement when building a consistent design system or a large-scale enterprise application. As the creator of CoreUI, I’ve designed our React components to be inherently flexible and easy to wrap. The most efficient and modern solution to extend CoreUI components is to use the “Wrapper Pattern,” which involves creating a custom functional component that spreads its props onto the underlying CoreUI primitive. This approach ensures you maintain full access to the original API while adding your own custom styles, default behaviors, or business logic.

Building enterprise-level applications requires a robust architecture, consistent UI, and scalable components that can handle complex data flows. As the creator of CoreUI, I have designed our React library specifically to meet these professional requirements. Since 2014, I have focused on refining React and Node.js ecosystems to ensure they meet the rigorous standards of corporate environments. Integrating CoreUI with React provides a battle-tested foundation that simplifies state management and UI consistency across large teams.