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Top 15 Java Awesome Projects
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awesome-system-design-resources
Learn System Design concepts and prepare for interviews using free resources.
A deeply-synthesized, opinionated reference distilled from five canonical sources: donnemartin/system-design-primer · ByteByteGoHq/system-design-101 · karanpratapsingh/system-design · ashishps1/awesome-system-design-resources · binhnguyennus/awesome-scalability
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SaaSHub
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awesome-low-level-design
Learn Low Level Design (LLD) and prepare for interviews using free resources.
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Android Debug Database
A library for debugging android databases and shared preferences - Make Debugging Great Again
I am Amit Shekhar, Founder @ Outcome School, I have taught and mentored many developers, and their efforts landed them high-paying tech jobs, helped many tech companies in solving their unique problems, and created many open-source libraries being used by top companies. I am passionate about sharing knowledge through open-source, blogs, and videos.
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Project mention: Crossfire: High-performance lockless spsc/mpsc/mpmc channels for Rust | news.ycombinator.com | 2025-11-01
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Awesome-Learning-Resources
"Technology Gold mine" to collect and share materials/resources (by GDGAhmedabad)
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password4j
Java cryptographic library that supports Argon2, bcrypt, scrypt and PBKDF2 aimed to protect passwords in databases. Easy to use by design, highly customizable, secure and portable. All the implementations follow the standards and have been reviewed to perform better in the JVM.
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awesome-j2me
Awesome list about everything related to J2ME. Documentation, academic papers, tutorials, communities, IDEs, SDKs, emulators, apps, video games.
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image-comparison
Published on Maven Central Java Library that compares 2 images with the same sizes and shows the differences visually by drawing rectangles. Some parts of the image can be excluded from the comparison. Can be used for automation QA tests.
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awesome-symbian
An Awesome List about everything related to Symbian OS. Documentation, academic papers, tutorials, communities, IDEs, SDKs, emulators, apps, video games.
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).
Java Awesome discussion
Java Awesome related posts
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Show HN: J2ME
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Connecting RDBs and Search Engines — Chapter 1
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System Design Resources
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php inspections ea plugin
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DPReview.com to close on April 10 after 25 years of operation
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Where to practice Owasp mobile top 10 vulnerabilities?-
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JavaFX Links of January 2023
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A note from our sponsor - SaaSHub
www.saashub.com | 18 Aug 2026
Index
What are some of the best open-source Awesome projects in Java? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | awesome-system-design-resources | 40,579 |
| 2 | awesome-low-level-design | 26,153 |
| 3 | Android Debug Database | 8,674 |
| 4 | useful-java-links | 6,194 |
| 5 | AndroidNetworking | 5,909 |
| 6 | JCTools | 3,864 |
| 7 | phpinspectionsea | 1,485 |
| 8 | Awesome-Learning-Resources | 748 |
| 9 | Glide Bitmap Pool | 602 |
| 10 | password4j | 430 |
| 11 | awesome-j2me | 404 |
| 12 | image-comparison | 394 |
| 13 | simple-openai | 381 |
| 14 | Data-Engineering-Roadmap | 245 |
| 15 | awesome-symbian | 135 |
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