Companies using Leptos

Leptos is a modern web framework written entirely in Rust, a system programming language delivering high performance with low memory footprint. The framework is isomorphic, meaning it is designed to run both on server-side and client-side, sharing the same codebase. This offers cohesion and efficiency when developing applications.

The primary concept behind Leptos is leveraging fine-grained reactivity. Essentially, it observes and tracks changes in your data and automatically updates the interface when data changes, creating a reactive environment. This approach allows developers to write declarative user interfaces. Declarative programming is a paradigm that expresses the logic of a computation without describing its control flow. Therefore, developers only need to specify what the interface should look like based on the state of the application, and Leptos takes care of updating the UI whenever state changes.

The utilization of Leptos involves setting up a Rust development environment and following the official documentation found at the [Leptos website](https://leptos.dev) to create and run a Leptos project. Since the framework uses Rust's isomorphic capabilities, the Rust codebase can be run on both the server and browser, saving time and resources during development.

By utilizing Rust's safety, concurrency, and speed in a reactive web framework, the purpose of Leptos is to deliver more reliable, efficient, and fast web applications. The framework provides the building blocks necessary to construct complex web applications, maintaining clean and maintainable code and reducing the complexity often involved in full-stack development.