Top 10 Java OOP Projects

eo

4 903 9.9 Java

EOLANG, an Experimental Object-Oriented Programming Language Based on 𝜑-calculus
Takes

1 795 8.3 Java

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

Project mention: Show HN: Java REST without annotations, DI nor reactive streams | news.ycombinator.com | 2023-06-11

This is quite similar to Takes (https://github.com/yegor256/takes).
I like both, look cleaner then all the annotation based ones.

WorkOS

workos.com sponsored

The modern identity platform for B2B SaaS. The APIs are flexible and easy-to-use, supporting authentication, user identity, and complex enterprise features like SSO and SCIM provisioning.
cactoos

0 725 8.0 Java

Object-Oriented Java primitives, as an alternative to Google Guava and Apache Commons
jcabi-github

2 302 8.5 Java

Java Object-Oriented Wrapper of GitHub API, with a fake implementation of the entire GitHub API (for your tests)

Project mention: Commit-teller - Problems during the development | dev.to | 2023-05-13

The jcabi-github dependency looked nice in the beginning but it was having issues with the event feed management, the endpoints were not properly setup in the code, but it was only a minor issue, I was able to overcome it by using two different operations to fetch the required data.

jpeek

1 200 8.1 Java

Hosted and command-line calculator of cohesion metrics for Java code
self-core

2 27 0.0 Java

Self's core, implemented with Java SE 11.
eo-kafka

2 26 9.0 Java

EO Kafka Producers and consumers for working with Apache Kafka message broker

Project mention: EO Kafka Producers and consumers for working with Apache Kafka message broker | news.ycombinator.com | 2023-06-09

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.
Bialetti

1 5 0.0 Java

A Java TCP/UDP server-side and client-side library/framework
Chess

1 4 2.7 Java

Command line PVP Chess (by AlexWang18)
StORMi

3 0 3.4 Java

Shujutech Object Relational Mapping Interface, the only Java ORM that fully supports all OO concepts.

Project mention: Ask HN: Is there still ORM hate these days? | news.ycombinator.com | 2023-11-16

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).