Overview

Topcoat is a modern, full-stack web framework for Rust that prioritizes simplicity and developer productivity. It offers a "batteries-included" experience, enabling you to build complete web applications without the typical complexities of managing separate frontend and backend concerns. Designed for both rapid development and robust performance, Topcoat empowers you to write all your application logic in Rust.

Key Features

• Seamless Full-Stack Development: Write your entire application in Rust, from server-side rendering and database queries to interactive client-side logic. Topcoat eliminates the need for separate API layers and complex build pipelines.
• Effortless Client Reactivity: Achieve dynamic user interfaces without the boilerplate. Topcoat's unique $(...) expression system allows you to write type-checked Rust that runs instantly in the browser, translating seamlessly to JavaScript. No WebAssembly bundles or client build steps are required for this core interactivity.
• Server-Side Rendering & Shards: Render markup directly on the server, allowing components to perform asynchronous operations like database queries without a round trip. Mark components as #[shard] to automatically re-render and update only the necessary HTML on the server when arguments change, ensuring efficient and interactive UIs.
• Intuitive HTML Templating: The view! macro provides a familiar and powerful templating experience, directly embedding Rust control flow and expressions within your HTML.
• Module-Based Routing: Optionally infer your application's route tree directly from your project's module structure, simplifying routing configuration and eliminating the need for a separate build step.
• Editable UI Components: Leverage the topcoat ui command to integrate premade, customizable UI components (inspired by shadcn/ui and built with Tailwind CSS) directly into your project, allowing you to tailor them to your exact needs.
• Integrated Asset Management: Easily manage assets like images, fonts, and icons. The asset! macro helps in serving files efficiently with aggressive browser caching and offers utilities for web fonts and icons.
• Built-in Tailwind CSS Support: Effortlessly integrate Tailwind CSS into your project with the tailwind feature, streamlining your styling workflow.

Typical Use Cases

Topcoat is ideal for a wide range of web application development scenarios, including:

• Rapid Prototyping & MVPs: Quickly build and iterate on web applications by consolidating your entire stack in Rust.
• Data-Intensive Applications: Leverage the power of server-side rendering and direct database access within components for dynamic and responsive data displays.
• Real-time Interactive Experiences: Create engaging user interfaces where client-side interactivity is crucial, without the overhead of traditional JavaScript frameworks.
• Backend-for-Frontend (BFF) Scenarios: Develop efficient and performant APIs and UIs from a single codebase.
• Microservices & APIs: Build robust API endpoints alongside your web application using the same framework.
• Projects Prioritizing Rust Ecosystem: For teams already invested in Rust or looking to harness its safety and performance benefits for web development.