Dropwizard is a Java framework for developing ops-friendly, high-performance, RESTful web services. It pulls together stable, mature libraries from the Java ecosystem into a simple, light-weight package that lets you focus on getting things done. 
 
Dropwizard has out-of-the-box support for sophisticated configuration, application metrics, logging, operational tools, and much more, allowing you and your team to ship a production-quality web service in the shortest time possible.
 
Dropwizard straddles the line between being a library and a framework. Its goal is to provide performant, reliable implementations of everything a production-ready web application needs. Because this functionality is extracted into a reusable library, your application remains lean and focused, reducing both time-to-market and maintenance burdens.

Dropwizard is a Java framework for developing ops-friendly, high-performance, RESTful web services. It pulls together stable, mature libraries from the Java ecosystem into a simple, light-weight package that lets you focus on getting things done. 

dropwizard - A damn simple library for building production-ready RESTful web services.

Spark is a micro framework for creating web applications in Kotlin and Java 8 with minimal effort. It is a simple and expressive Java/Kotlin web framework DSL built for rapid development. Sparks intention is to provide an alternative for Kotlin/Java developers that want to develop their web applications as expressive as possible and with minimal boilerplate. With a clear philosophy Spark is designed not only to make you more productive, but also to make your code better under the influence of Spark’s sleek, declarative and expressive syntax.

Spark - A simple expressive web framework for java

Light 4j is a fast, lightweight and cloud native microservices framework. Light means lightweight, lighting fast and shed light on how to program with modern Java SE. It is 44 times faster than the most popular microservices platform Spring Boot embedded Tomcat and use only 1/5 of memory. 
Its features include: 
<ul>
<li>Plugin architecture for startup/shutdown hooks and middleware components</li>
<li>Distributed OAuth2 JWT security verification as part of the framework</li>
<li>Request and response validation against OpenAPI specification at runtime</li>
<li>Metrics collected in influxdb and viewed from Grafana Dashboard for both services and clients</li>
<li>Global exception handling for runtime exception, api exception and other checked exceptions</li>
<li>Mask sensitive data like credit card, sin number etc. before logging</li>
<li>Sanitize cross site scripting for query parameters, request headers and body</li>
<li>Audit to dump important info or entire request and response.</li>
<li>Body parser to support different content types</li>
<li>Standardized response code and messages from configuration file</li>
<li>Externalized configuration for all modules for dockerized environment</li>
<li>CORS pre-flight handler for SPA (Angular or React) from another domain</li>
<li>Rate limiting for services that exposed outside to the Internet</li>
<li>Service registry and discovery support direct, Consul and Zookeeper</li>
<li>Client side discovery and load balance to eliminate proxies</li>
<li>A client module that is tightly integrated with Light-OAuth2 and supports traceability</li>
</ul>

Light 4j is a fast, lightweight and cloud native microservices framework. Light means lightweight, lighting fast and shed light on how to program with modern Java SE. It is 44 times faster than the most popular microservices platform Spring Boot embedded Tomcat and use only 1/5 of memory.

light-4j - A fast, lightweight and more productive microservices framework

Ninja is a full stack web framework for Java. It is made up of libraries that deliver everything. From Html, Json and Xml rendering and parsing to management of different environments, database persistence, testing and much more.
 
<ul>
 <li>Web friendly. Restful architecture. Simple programming model.</li><li>Plain vanilla Java. Dependency Injection. First class IDE integration.</li><li>Super fast development cycles.</li><li>Simple and fast to test (Mocked tests / Integration tests).</li><li>Excellent build and CI support.</li><li>Simple JSON consumption and rendering for clean RESTful APIs.</li><li>HTML rendering / Form submission validation and parsing.</li><li>Built-in support for authentication of users.</li><li>Not much bytecode magic. Clean codebase - easy to extend.</li>
</ul>

Ninja is a full stack web framework for Java. It is made up of libraries that deliver everything. From Html, Json and Xml rendering and parsing to management of different environments, database persistence, testing and much more.

Ninja - Ninja is a full stack web framework for Java

Ratpack is a set of Java libraries for building modern HTTP applications. It provides just enough for writing practical, high performance, apps. It is built on Java 8, Netty and reactive principles. It is similar to NodeJS, helps to implement non blocking HTTP apps in Java.


Ratpack - A toolkit for JVM web applications

RESTX is the lightweight, modular, feature rich, blazing fast, open source Java REST framework. It shares similarities with modern frameworks like Play! like hot compile and a very productive experience, but focused on REST and pure Java.
 
It is focused more on Rest. This implies that it’s not a general web framework, i.e., there is no templating mechanism. It’s better use with a JavaScript framework on the client side, and you can always use any other templating mechanism to serve your pages.

RESTX is the lightweight, modular, feature rich, blazing fast, open source Java REST framework. It shares similarities with modern frameworks like Play! like hot compile and a very productive experience, but focused on REST and pure Java.

RESTX - the lightweight Java REST framework

Xenon is a framework for writing small REST-based services. (Some people call them microservices.) The runtime is implemented in Java and acts as the host for the lightweight, asynchronous services. The programming model is language agnostic (does not rely on Java specific constructs) so implementations in other languages are encouraged. The services can run on a set of distributed nodes. Xenon provides replication, synchronization, ordering, and consistency for the state of the services. Because of the distributed nature of Xenon, the services scale well and are highly available.
 
Xenon is a "batteries included" framework. Unlike some frameworks that provide just consistent data replication or just a microservice framework, Xenon provides both. Xenon services have REST-based APIs and are backed by a consistent, replicated document store.
 
The lightweight runtime enables the creation of highly available and scalable applications in the form of cooperating light weight services. The operation model for a cluster of Xenon nodes is the same for both on premise, and service deployments.

Xenon is a framework for writing small REST-based services. (Some people call them microservices.) The runtime is implemented in Java and acts as the host for the lightweight, asynchronous services. The programming model is language agnostic (does not rely on Java specific constructs) so implementations in other languages are encouraged. The services can run on a set of distributed nodes. Xenon provides replication, synchronization, ordering, and consistency for the state of the services. Because of the distributed nature of Xenon, the services scale well and are highly available.

Xenon - Decentralized Control Plane Framework

Spincast is a framework to serve as a backend for Single Page Applications (SPA), to develop old-school HTML generated websites or to be a REST API services platform. Spincast aims to feel more like a library than like a framework. It is not opinionated and favors configuration over convention. Its main goal is to give power to the developers. 

Spincast is an highly flexible and open source Java web framework, based on Guice

Discover open source projects across all platforms

Projects