Sinatra

Sinatra is a lightweight framework for building web applications in the Ruby programming language. It provides a simple way to create websites and APIs by allowing developers to define routes—URLs and corresponding actions—without extensive setup. Sinatra focuses on minimalism and flexibility, enabling quick development with fewer lines of code compared to larger frameworks. It is ideal for small to medium projects, prototypes, or services that require custom behavior, making it popular among developers who prefer a straightforward approach to web programming.