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Top 17 Java C Projects
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Anyway, reading this reminds me of the old chestnut from networking about choosing UDP over TCP for its low-latency and simplicity and then eventually adding nearly all the reliability facilities of TCP to the app (automatic retry
Sometimes you can build a successful business out of doing so: https://aeron.io/
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Kargo
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QR-Code-generator
High-quality QR Code generator library in Java, TypeScript/JavaScript, Python, Rust, C++, C.
Project mention: Fifty Green Tests, Two Real Bugs, and the Oracle One `npm install` Away | dev.to | 2026-08-31Mask selection is meant to be deterministic: apply eight masks, score each, keep the lowest. But the rule that penalizes finder-lookalike patterns is loose enough that implementations disagree on what counts. qrkit, whose scoring I ported from Nayuki's reference implementation, and qrcode, which rolls its own, choose different masks on three of every eight inputs I tested. Both scan.
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open-location-code
Open Location Code is a library to generate short codes, called "plus codes", that can be used as digital addresses where street addresses don't exist.
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You have an orders topic on a Kafka cluster, its values encoded with Avro against a schema in the Schema Registry. You want the orders worth more than fifty euros on a topic of their own, and you have decided to do it with Kafka Streams — a JVM library, your code, your deployment.
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AppSignal
Monitoring that respects your time & budget. APM, error tracking, and dashboards for modern web apps. Ten-minute setup, transparent flat pricing, and support from engineers who actually use the product.
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HacktoberFest
:octocat: Add your Programs or tech content to help other contributors ✅ (by tarunsinghofficial)
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SquirrelJME
SquirrelJME is a Java ME 8 Virtual Machine for embedded and Internet of Things devices. It has the ultimate goal of being 99.9% compatible with the Java ME standard.
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totalcross
TotalCross is a Software Development Kit that helps cross platform application development. Currently supported platforms are: Windows, Wince, Android, iOS, Linux and Linux ARM for embedded systems.
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Nayuki-web-published-code
Complete collection of code files (*.java/js/py/cpp/etc.) published on Project Nayuki website.
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gradle-native
The home of anything about Gradle support for natively compiled languages (by nokeedev)
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Ziphra Messenger Common
Ziphra Messenger Common ziphra-common: Contains reusable classes shared between client and server, such as cryptographic primitives, protocol constants, and utilities. For projects: Ziphra Messenger Client & Ziphra Messenger Server
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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 C discussion
Java C related posts
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JPEG Compression
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Migration Oracle -> PostgreSQL : il n’y a que le driver à changer ! Non ?
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Japanese addresses: No street names. Block numbers
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The Return of the Frame Pointers
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Quarkus 3.4 - Container-first Java Stack: Install with OpenJDK 21 and Create REST API
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A Critical Analysis of the What3Words Geocoding Algorithm
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How do you setup a Macro/AHK for whips?
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A note from our sponsor - Kargo
akuity.io | 13 Sep 2026
Index
What are some of the best open-source C projects in Java? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | Aeron | 8,861 |
| 2 | QR-Code-generator | 6,669 |
| 3 | JavaCPP | 4,707 |
| 4 | open-location-code | 4,352 |
| 5 | Apache Avro | 3,306 |
| 6 | jnativehook | 1,857 |
| 7 | plc4x | 1,733 |
| 8 | guacamole-client | 1,715 |
| 9 | colfer | 759 |
| 10 | HacktoberFest | 380 |
| 11 | SquirrelJME | 321 |
| 12 | totalcross | 226 |
| 13 | Nayuki-web-published-code | 156 |
| 14 | gradle-native | 50 |
| 15 | interpreter | 37 |
| 16 | TennessineC | 20 |
| 17 | Ziphra Messenger Common | 0 |
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