Frameworks are practically the backbone of any modern web application - they are the starting point for most technology decisions. They speed up development and give structure, but it's worth remembering that not every project needs a "heavy" stack; sometimes a lightweight, well-chosen set of libraries is enough.
In this category, we describe the most popular web frameworks and the situations in which they work. React is a great fit where you need a responsive interface, such as extensive admin panels with many interactions; Vue.js is often a simpler choice for smaller applications. Angular tends to be the choice of larger teams or enterprise projects, while Node.js works well for lightweight APIs and real-time solutions. Django and Laravel are classics for systems with extensive administration and ORM - they can greatly speed up deployment, although they sometimes limit architectural freedom.
Mobile frameworks are a bit of a different tale. Flutter allows you to build a consistent interface on iOS and Android from a single code base and usually lowers maintenance costs; React Native makes sense if your team is already familiar with React and wants to reduce deployment time. Xamarin is still a reasonable choice if the company's stack is based on .NET and Visual Studio - integration happens to be the biggest advantage then.
We're not forgetting the back-end and development tools. Spring Boot is often chosen for transactional systems and banking projects, Express.js serves great for fast REST APIs, and ASP.NET Core may be the best choice where Microsoft dominates. In practice, it is worthwhile to analyze the cost of licenses, the time needed for development, and the impact of the choice on application performance and security.
There is no single "best" framework - there are trade-offs. In my experience, it's worth basing a decision on specific business requirements, the skills of the team, and a projection of maintenance costs. And yes, there are times when choices dictated by fashion instead of needs later complicate development - it's worth keeping this in mind.