Top 10 Java HTTP Server Projects

Armeria

2 4,173 9.4 Java

Your go-to microservice framework for any situation, from the creator of Netty et al. You can build any type of microservice leveraging your favorite technologies, including gRPC, Thrift, Kotlin, Retrofit, Reactive Streams, Spring Boot and Dropwizard.

Project mention: Evaluating Spring Boot, Quarkus, or Micronaut and why for Stargate v2 | reddit.com/r/java | 2022-12-26

OP doesn't seem to be aware of Armeria https://github.com/line/armeria
Jetty

6 3,524 9.7 Java

Eclipse Jetty® - Web Container & Clients - supports HTTP/2, HTTP/1.1, HTTP/1.0, websocket, servlets, and more

Project mention: Security of Eclipse Jetty dependencies | reddit.com/r/qztray | 2022-11-02

So, 9.4.48 fixes the first two CVEs, but the last one doesn't mention 9.4 at all, so I'm not sure if that's left out due to EOL status for 9.4.
Sonar

www.sonarsource.com
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Write Clean Java Code. Always.. Sonar helps you commit clean code every time. With over 600 unique rules to find Java bugs, code smells & vulnerabilities, Sonar finds the issues while you focus on the work.
Takes

0 754 7.9 Java

True Object-Oriented Java Web Framework without NULLs, Static Methods, Annotations, and Mutable Objects
DeepfakeHTTP

0 458 3.1 Java

DeepfakeHTTP is a web server that uses HTTP dumps as a source for responses.
Firefly

0 288 6.8 Java

Firefly is an asynchronous web framework for rapid development of high-performance web application. (by hypercube1024)
donkey

0 278 1.0 Java

Modern Clojure HTTP server and client built for ease of use and performance
rawhttp

1 172 6.7 Java

HTTP library to make it easy to deal with raw HTTP.

Project mention: HTTP3 Request for Comment | reddit.com/r/programming | 2022-06-08

What is complicated about it?? Here's my implementation of it: https://github.com/renatoathaydes/rawhttp/blob/master/rawhttp-core/src/main/java/rawhttp/core/body/ChunkedBodyParser.java
InfluxDB

www.influxdata.com
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Access the most powerful time series database as a service. Ingest, store, & analyze all types of time series data in a fully-managed, purpose-built database. Keep data forever with low-cost storage and superior data compression.
java-http

7 164 10.0 Java

A full featured, stand-alone, high-performance HTTP server and client written entirely in plain Java

Project mention: November 15-19, 2022 FLiP Stack Weekly | dev.to | 2022-11-21
lWS

0 59 0.0 Java

lightweight Web Server (lWS) for Android
avaje-jex

2 15 7.4 Java

Web routing for Jetty, Grizzly, JDK Http server

Project mention: Libraries other than Spring Boot for creating web APIs | reddit.com/r/java | 2022-06-28

I created https://github.com/avaje/avaje-jex ... with the hope of helping to move Javalin more in the Java direction but yeah, Javalin isn't going in that direction. So avaje-jex now will follow it's own path (as pretty much a web routing layer that abstracts over various http servers like jetty, grizzly etc with a java and loom focus).

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). The latest post mention was on 2022-12-26.