javalin / javalin

A simple and modern Java and Kotlin web framework

jetty / jetty.project

Eclipse Jetty® - Web Container & Clients - supports HTTP/3, HTTP/2, HTTP/1, websocket, servlets, and more

undertow-io / undertow

High performance non-blocking webserver

opensolon / solon

🔥 Java enterprise application development framework for full scenario: Restrained, Efficient, Open, Ecologicalll!!! 700% higher concurrency 50% memory savings Startup is 10 times faster. Packing 90% smaller; Compatible with java8 ~ java26; Supports LTS. (Replaceable spring)

getsentry / sentry-java

A Sentry SDK for Java, Android and other JVM languages.

apereo / java-cas-client

Apereo Java CAS Client

jruby / warbler

Warbler chirpily constructs .war files of your Ruby applications.