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Top 23 Java Java8 Projects
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Javaslang
vʌvr (formerly called Javaslang) is a non-commercial, non-profit object-functional library that runs with Java 8+. It aims to reduce the lines of code and increase code quality.
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InfluxDB
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Sevalla
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cyclops-react
An advanced, but easy to use, platform for writing functional applications in Java 8. (by aol)
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appengine-java-standard
Google App Engine Standard Java runtime: Prod runtime, local devappserver, Cloud SDK Java components, GAE APIs, and GAE API emulators.
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Project mention: Show HN: I built an AI that turns GitHub codebases into easy tutorials | news.ycombinator.com | 2025-04-19
I used the preview model because I got rate limited and the error message suggested it.
I used this on two projects:
- https://github.com/prime-framework/prime-mvc a largish open source MVC java framework my company uses. I'm not overly familiar with this, though I've read a lot of code written in this framework.
- https://github.com/FusionAuth/fusionauth-quickstart-ruby-on-... a smaller example application I reviewed and am quite familiar with.
- https://github.com/fusionauth/fusionauth-jwt a JWT java library that I've used but not contributed to.
Overall thoughts:
Lots of exclamation points.
Thorough overview, including of some things that were not application specific (rails routing).
Great analogies. Seems to lean on them pretty heavily.
Didn't see any inaccuracies in the tutorials I reviewed.
Pretty amazing overall!
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kid-bank
Now known as Kid Money Manager. It's not a real bank, but keeps track of your kid's earnings, savings, and spending. Watch me Live Code its development on Twitch.
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jmurmel
A standalone or embeddable JVM based interpreter/ compiler for Murmel, a single-namespace Lisp dialect inspired by Common Lisp
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Project mention: Show HN: I built an AI that turns GitHub codebases into easy tutorials | news.ycombinator.com | 2025-04-19
I used the preview model because I got rate limited and the error message suggested it.
I used this on two projects:
- https://github.com/prime-framework/prime-mvc a largish open source MVC java framework my company uses. I'm not overly familiar with this, though I've read a lot of code written in this framework.
- https://github.com/FusionAuth/fusionauth-quickstart-ruby-on-... a smaller example application I reviewed and am quite familiar with.
- https://github.com/fusionauth/fusionauth-jwt a JWT java library that I've used but not contributed to.
Overall thoughts:
Lots of exclamation points.
Thorough overview, including of some things that were not application specific (rails routing).
Great analogies. Seems to lean on them pretty heavily.
Didn't see any inaccuracies in the tutorials I reviewed.
Pretty amazing overall!
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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 Java8 discussion
Java Java8 related posts
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Vavr 0.10.6 Released
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A Better Maybe for Java
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A simple to use Java 8 JWT Library
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Vavr – an object-functional language extension to Java 8
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Prime MVC is a high performance Model View Controller framework built in Java
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A simple to use Java 8 JWT Library. Verify, Sign, Encode, Decode all day
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Monad Transformer in Java for handling Asynchronous Operations and errors
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A note from our sponsor - Sevalla
sevalla.com | 31 Aug 2025
Index
What are some of the best open-source Java8 projects in Java? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | Javaslang | 5,961 |
| 2 | Blade | 5,878 |
| 3 | JaCoCo | 4,396 |
| 4 | Dragonwell8 | 4,285 |
| 5 | Light-Java | 3,671 |
| 6 | jasypt-spring-boot | 2,996 |
| 7 | StreamEx | 2,261 |
| 8 | AutobahnAndroid | 1,534 |
| 9 | cyclops-react | 1,327 |
| 10 | JBot | 1,205 |
| 11 | java-concurrency-examples | 296 |
| 12 | eo-yaml | 272 |
| 13 | appengine-java-standard | 211 |
| 14 | fusionauth-jwt | 189 |
| 15 | fim | 121 |
| 16 | kid-bank | 97 |
| 17 | zerocell | 82 |
| 18 | objectlabkit | 71 |
| 19 | ksuid | 41 |
| 20 | jmurmel | 25 |
| 21 | ProxyBuilder | 24 |
| 22 | fusionauth-java-client | 14 |
| 23 | prime-mvc | 11 |
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