Dropwizard

Dropwizard is a fiercely minimalist, highly opinionated, and staggeringly fast framework that explicitly ignores HTML rendering to focus on one singular goal: "Building Elite, High-Performance RESTful Microservices." While Spring Boot tries to be everything to everyone, Dropwizard is a highly curated bundle of the absolute best-in-class Java libraries (Jetty for web, Jersey for REST, Jackson for JSON, Metrics for monitoring). The absolute core superpower of Dropwizard is its "Out-of-the-Box Production Readiness." It assumes you are building a backend API for a massive web or mobile app. You write your API, compile it into a single 'Fat JAR' file, and run it. Immediately, Dropwizard provides a staggering metrics dashboard (tracking exactly how fast every API endpoint is) and robust logging without any configuration. Because it completely strips away the bloat of traditional Java frameworks, providing incredibly fast startup times and massive API performance, it is the absolute darling of elite backend engineering teams, massive mobile app architectures, and high-speed data microservices.