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Top 23 Java Opensource Projects
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Project mention: Lessons in creating family photos that people want to keep (2018) | news.ycombinator.com | 2025-01-26
The automatic sync function of the Nextcloud app ends accessing the photos in a way that doesn't include the location metadata of the photo. So the file it puts on your Nextcloud server does not have the location metadata.
https://github.com/nextcloud/android/issues/14409
Fortunately (I think?) the auto-upload seems to become unreliable in general so people are more likely to notice that funny things are happening.
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jBPM (Java Business Process Management) is an open-source integration platform with a workflow engine at its core. Although the jBPM project defines itself as a BPM (Business Process Management) or workflow engine, toolkit, or suite, we argue that describing it as an integration platform is more precise.
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triplea
TripleA is a turn based strategy game and board game engine, similar to Axis & Allies or Risk.
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Project mention: Kafbat UI – Resurrected Kafka UI from the Original Core Team | news.ycombinator.com | 2025-04-15
We brought Kafbat UI back to life — a clean, modern UI for Apache Kafka (kafka-ui), originally built by the core team that created the widely used Kafka tools you may have seen before.
Key features:
Built by the original maintainers
Instant cluster introspection and topic browsing
Zero-config local startup (Docker support included)
Actively maintained & open source
GitHub: https://github.com/kafbat/kafka-ui
We’d love your feedback and contributions — let’s build the Kafka UI we all wanted back.
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Project mention: FakeTraveler: Fake where your phone is located (Mock location for Android) | news.ycombinator.com | 2024-07-30
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airy
💬 Open Source App Framework to build streaming apps with real-time data - 💎 Build real-time data pipelines and make real-time data universally accessible - 🤖 Join historical and real-time data in the stream to create smarter ML and AI applications. - ⚡ Standardize complex data ingestion and stream data to apps with pre-built connectors
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InfluxDB
InfluxDB high-performance time series database. Collect, organize, and act on massive volumes of high-resolution data to power real-time intelligent systems.
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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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convertigo
Convertigo is an open source Low Code platform including a No Code Application builder for full-stack mobile and web application development
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It does not turn a smartphone into a dumbphone (I don't think that is even possible without removing entire parts of the system, possibly bricking the device) but the simpler and immediate interface makes it a lot more usable.
https://github.com/UriahShaulMandel/BaldPhone
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hash-checker
Fast and simple application that allows you to generate and compare hashes from files and text
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boyka-framework
🎉 Ultimate test automation framework for automating any application on any platform
Project mention: Restful-Ecommerce - A simple demo node E-Commerce application for practising API Testing | dev.to | 2024-09-11Learn API Test Automation using tools and frameworks like SuperTest, Rest-Assured, Playwright, Cypress, Boyka-Framework, etc.
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WebCapture
WebCapture is an open source Android application that allows users to convert any web page into a PDF file.
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Dockerfile sets up a containerized environment for the application, leveraging Amazon Corretto 22 on Alpine Linux. It downloads the AWS OpenTelemetry Agent (you can use the standard one if you don't need AWS-related) to enable observability features, including distributed tracing, and then copies the application JAR file into the container. Environment variables are configured to include the Java agent for instrumentation and allocate 90% of available RAM (which is useful for a container-based setup). Finally, it exposes port 8080 and specifies the command to start the Java application server.
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The-Freedom-Wrapper-Project
This is the Original Freedom Wrapper Project repository. It is developed and maintained by Matthew Benchimol. The Freedom Wrapper Project is an Open Source and Free Android source code project. The project has moved to an organization page at: https://github.com/The-Freedom-Wrapper-Project
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ImapNotes3
Sync your notes between Android, iOs devices and different accounts like Gmail, iCloud, Posteo.de and others
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open-wes
🔥 Open WES is a customizable, open-source Warehouse Execution System designed to streamline warehouse operations. By integrating AI-driven optimization and a microservices architecture, Open WES delivers smarter, scalable, and future-ready solutions for modern supply chains. 🌟 Star to support our work!
You can explore the project further at GitHub and find more information in the modules-ai section.
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SaaSHub
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).
Java Opensource discussion
Java Opensource related posts
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Data on Kubernetes: Part 6- Strimzi for running Apache kafka
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Is there any FOSS calendar or planner app that includes alarms?
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What's a board game with a really high skill ceiling?
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I want to buy a new rts game . Do you have any to suggest ? bellow are the rts's that i have
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Discussion Thread
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RTS
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RTS that focuses on base building.
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A note from our sponsor - CodeRabbit
coderabbit.ai | 17 Apr 2025
Index
What are some of the best open-source Opensource projects in Java? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | kafka-ui | 10,587 |
| 2 | android | 4,547 |
| 3 | jbpm | 1,673 |
| 4 | triplea | 1,389 |
| 5 | kafka-ui | 981 |
| 6 | FakeTraveler | 927 |
| 7 | airy | 384 |
| 8 | image-comparison | 362 |
| 9 | convertigo | 337 |
| 10 | BaldPhone | 284 |
| 11 | downlords-faf-client | 202 |
| 12 | hash-checker | 196 |
| 13 | boyka-framework | 131 |
| 14 | sawmill | 117 |
| 15 | WebCapture | 108 |
| 16 | aws-otel-java-instrumentation | 86 |
| 17 | The-Freedom-Wrapper-Project | 80 |
| 18 | ImapNotes3 | 56 |
| 19 | Aospdeskclock | 54 |
| 20 | open-wes | 30 |
| 21 | Headi | 30 |
| 22 | javacodes | 30 |
| 23 | DynamicRelations | 19 |
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