InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now. Learn more →
Top 17 Java Hacktoberfest2021 Projects
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InfluxDB
InfluxDB – Built for High-Performance Time Series Workloads. InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
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Teku - Java implementation
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
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InterviewQuestions2021
You can contribute to this repo by adding Coding Questions with Solutions in any programming language
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Making-class-in-different-Programming-languages-
Making Class in different programming languages is an attempt to make it possible for all the classes available in one place in different languages!
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awesome-spring-boot-rest-api
:sunny: :star: :star: Awesome Spring Boot REST API :star: :star: :sunny:
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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 Hacktoberfest2021 discussion
Java Hacktoberfest2021 related posts
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JDK Mission Control 7.0 Tutorial (2020)
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Join us for Hacktoberfest 2022 by contributing to StepZen
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How did I get my first job as a software engineer?
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Need help to start opensource
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Best Open Source Programs For Students to Participate
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Open Source programs
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Googling and Self-Teaching – Attend Code School Q&A with Danielle Thompson
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A note from our sponsor - InfluxDB
www.influxdata.com | 18 Jun 2025
Index
What are some of the best open-source Hacktoberfest2021 projects in Java? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | CompreFace | 6,437 |
| 2 | cardboard | 1,068 |
| 3 | es4x | 889 |
| 4 | teku | 708 |
| 5 | jmc-tutorial | 216 |
| 6 | Java | 67 |
| 7 | AI-Improvements | 46 |
| 8 | ICBM-Classic | 47 |
| 9 | container-jfr | 27 |
| 10 | RaumBaller | 19 |
| 11 | Go-To-Sleep-Android | 14 |
| 12 | jpizza | 10 |
| 13 | InterviewQuestions2021 | 8 |
| 14 | Making-class-in-different-Programming-languages- | 5 |
| 15 | awesome-spring-boot-rest-api | 4 |
| 16 | DV-Hacktoberfest | 3 |
| 17 | springboot-mongodb | 1 |
Sponsored
InfluxDB – Built for High-Performance Time Series Workloads
InfluxDB 3 OSS is now GA. Transform, enrich, and act on time series data directly in the database. Automate critical tasks and eliminate the need to move data externally. Download now.
www.influxdata.com