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Top 23 Java Framework Projects
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Spring Boot
Spring Boot helps you to create Spring-powered, production-grade applications and services with absolute minimum fuss.
During my career break that I started in 2025, I started exploring the ever-changing Generative AI landscape. In Decemember, I was exploring Spring Boot as I hadn't used it in anger professionally having used other Java frameworks like Jersey, Play and I wanted to build something.
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Project mention: Spring: la Feature que Tardó 6 Años en Llegar (Y Cómo Cambia Todo) | dev.to | 2025-11-14
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Project mention: MonoGame: A .NET framework for making cross-platform games | news.ycombinator.com | 2026-03-07
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transmittable-thread-local
📌 a missing Java std lib(simple & 0-dependency) for framework/middleware, provide an enhanced InheritableThreadLocal that transmits values between threads even using thread pooling components.
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android-common
Android common lib, include ImageCache, HttpCache, DropDownListView, DownloadManager, Utils and so on
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Conductor
A small, yet full-featured framework that allows building View-based Android applications (by bluelinelabs)
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android-priority-jobqueue
A Job Queue specifically written for Android to easily schedule jobs (tasks) that run in the background, improving UX and application stability.
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nucleus
Nucleus is an Android library, which utilizes the Model-View-Presenter pattern to properly connect background tasks with visual parts of an application.
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spring-data-redis
Provides support to increase developer productivity in Java when using Redis, a key-value store. Uses familiar Spring concepts such as a template classes for core API usage and lightweight repository style data access.
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Codename One
Cross-platform framework for building truly native mobile apps with Java or Kotlin. Write Once Run Anywhere support for iOS, Android, Desktop & Web.
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spring-data-mongodb
Provides support to increase developer productivity in Java when using MongoDB. Uses familiar Spring concepts such as a template classes for core API usage and lightweight repository style data access.
To start building our application, we will need to bring in a few dependencies. The easiest way to get started is using Spring Initializr. We are going to need the Model Context Protocol Server and the Spring Web dependencies. We'll be adding the Spring Data MongoDB dependency later on, but we'll keep it to just the first two for now to make getting started easier.
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LiteCommon
LiteOrm is a fast, small, powerful ORM framework for Android. LiteOrm makes you do CRUD operarions on SQLite database with a sigle line of code efficiently.
Java Framework discussion
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Building EmbedQA: An Open Source API Testing Tool with Spring Boot 🚀
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A2UI Protocol: Building Intelligent Agent-to-User Interfaces
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PDF processing with Spring Boot (Tutorial)
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Spring: la Feature que Tardó 6 Años en Llegar (Y Cómo Cambia Todo)
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How to Configure Global Settings for Spring RestClient
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Java’s not dead, but it’s definitely been zombified
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OpenTelemetry configuration gotchas
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A note from our sponsor - SaaSHub
www.saashub.com | 5 Apr 2026
Index
What are some of the best open-source Framework projects in Java? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | Spring Boot | 80,330 |
| 2 | Spring | 59,809 |
| 3 | Dubbo | 41,685 |
| 4 | libGDX | 24,974 |
| 5 | webmagic | 11,698 |
| 6 | VirtualApp | 10,950 |
| 7 | Spring Security | 9,480 |
| 8 | transmittable-thread-local | 8,277 |
| 9 | Mosby | 5,463 |
| 10 | Small | 5,044 |
| 11 | android-common | 5,022 |
| 12 | Conductor | 3,904 |
| 13 | android-priority-jobqueue | 3,383 |
| 14 | Spring Data JPA | 3,252 |
| 15 | UltimateAndroid | 2,109 |
| 16 | nucleus | 1,960 |
| 17 | spring-data-redis | 1,857 |
| 18 | EdXposedManager | 1,830 |
| 19 | Codename One | 1,830 |
| 20 | spring-data-mongodb | 1,676 |
| 21 | legend | 1,607 |
| 22 | Moxy | 1,594 |
| 23 | LiteCommon | 1,486 |