Top 16 Java Annotation Projects

picocli

29 4,698 8.6 Java

Picocli is a modern framework for building powerful, user-friendly, GraalVM-enabled command line apps with ease. It supports colors, autocompletion, subcommands, and more. In 1 source file so apps can include as source & avoid adding a dependency. Written in Java, usable from Groovy, Kotlin, Scala, etc.

Project mention: GraalVM for JDK 21 is here | news.ycombinator.com | 2023-09-19

Picocli allows using a compiler annotation processor to generate classes at compile time instead [0].
[0]: https://github.com/remkop/picocli/blob/main/picocli-codegen/...
easydeviceinfo

0 1,752 0.0 Java

:iphone: [Android Library] Get device information in a super easy way.
WorkOS

workos.com
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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.
Mixin

13 1,309 6.0 Java

Mixin is a trait/mixin and bytecode weaving framework for Java using ASM
jspecify

11 406 8.3 Java

An artifact of fully-specified annotations to power static-analysis checks, beginning with nullness analysis.

Project mention: Java, null, and JSpecify [video link] | /r/java | 2023-12-11

There's also a fair amount of content to explore starting at jspecify.org.
JMapper Framework

0 221 3.7 Java

Elegance, high performance and robustness all in one java bean mapper
dropwizard-jobs

1 159 8.7 Java

Scheduling / Quartz integration for Dropwizard
airline

0 125 6.5 Java

Java annotation-based framework for parsing Git like command line structures with deep extensibility (by rvesse)
InfluxDB

www.influxdata.com
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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.
SqliteMagic

0 120 1.5 Java

Compile time processed, annotation driven, no reflection SQLite database layer for Android
Kripton Persistence Library

0 119 0.0 Java

A Java/Kotlin library for Android platform, to manage bean's persistence in SQLite, SharedPreferences, JSON, XML, Properties, Yaml, CBOR.
OpenLabeler

1 104 0.0 Java

OpenLabeler is an open source desktop application for annotating objects for AI appplications
zerocell

0 78 0.0 Java

Simple, efficient Excel to POJO library for Java
literal

11 76 0.0 Java

Literal augments your online reading experience; capture annotations, sources, and knowledge.
1. AutoProxy

0 18 0.0 Java

Annotation Processing Library. Generates proxy class on top of interface/abstract class, that allows to intercept calls. Also known as a design pattern: proxy, delegate, interceptor.
spring-multi-data-source

2 11 7.3 Java

To mitigate Spring's limitations with multiple data sources in a single service, this library provides two custom annotations in Java that automatically generate all the required bean definition configurations and package-segregated repositories, for each data source.

Project mention: Supercharge Your Spring Boot Services with Multiple Data Sources! Introducing spring-multi-data-source! | /r/SpringBoot | 2023-06-23

Please let me know of any issues at https://github.com/Dhi13man/spring-multi-data-source/issues, as it's my first Open-Source work with Java.
auto-record

0 6 8.4 Java

Java record source generator
maven-properties-gen

1 3 2.6 Java

Maven Properties Generator for Java
SaaSHub

www.saashub.com
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SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

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 2023-12-11.

Java Annotations related posts

Java, null, and JSpecify [video link]
1 project | /r/java | 11 Dec 2023
Design document on nullability and value types (Brian Goetz)
1 project | /r/java | 2 Jun 2023
Java might eventually get null-restricted types
1 project | /r/java | 25 Apr 2023

Index

What are some of the best open-source Annotation projects in Java? This list will help you:

	Project	Stars
1	picocli	4,698
2	easydeviceinfo	1,752
3	Mixin	1,309
4	jspecify	406
5	JMapper Framework	221
6	dropwizard-jobs	159
7	airline	125
8	SqliteMagic	120
9	Kripton Persistence Library	119
10	OpenLabeler	104
11	zerocell	78
12	literal	76
13	1. AutoProxy	18
14	spring-multi-data-source	11
15	auto-record	6
16	maven-properties-gen	3