Top 4 Java Webframework Projects

Ninja

2 1,912 5.9 Java

Ninja is a full stack web framework for Java. Rock solid, fast and super productive. (by ninjaframework)
Jooby

13 1,658 9.7 Java

The modular web framework for Java and Kotlin

Project mention: Javalin – a simple web framework for Java and Kotlin | news.ycombinator.com | 2024-02-11

One of the good things about it is that using asynchrony is optional. If you don't have to call out anywhere to build the response, processing can all stay in the handler's calling thread. If you do, you can return a future and have the library handle the async for you.
One downside is that it is based on Jetty which isn't considered the most performant backend. A lib with a similar API but based on Netty is Jooby [1] which scores well in the Techempower benchmarks.
[1] - https://jooby.io/

InfluxDB

www.influxdata.com sponsored

Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.
Rapidoid

0 1,623 0.0 Java

Rapidoid - Extremely Fast, Simple and Powerful Java Web Framework and HTTP Server!
actframework

0 747 0.0 Java

An easy to use Java MVC server stack

NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).