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Top 12 Java Config Projects
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Project mention: Pkl from Apple: configuration as code language with rich validation and tooling | news.ycombinator.com | 2026-05-31
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centraldogma
Highly-available version-controlled service configuration repository based on Git, ZooKeeper and HTTP/2
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Before any of this, I tried using the spring-dotenv library to load my .env file automatically instead of exporting variables by hand every time. After adding it, login stopped working, and I genuinely don't know why — I never confirmed whether it was even loading the file, or something else entirely. I removed the dependency and went back to exporting variables manually. If anyone's gotten this working alongside Spring Security + OAuth2, I'd like to hear how.
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gestalt
A Java configuration library that allows you to build your configurations from multiple sources, merges them and convert them into an easy-to-use typesafe configuration class. A simple but powerful interface allows you to navigate to a path within your configurations and retrieve a configuration object, list, or a primitive value. (by gestalt-config)
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derecearthmod
With over 300,000 downloads, this is a modification for the Java based sandbox video game Minecraft that adds features from the C++ based spin-off game, Minecraft Earth.
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clear-config-java
A modern, type-safe, and highly-composable configuration library with a focus on runtime clarity
Project mention: Show HN: ClearConfig for Java – A modern, highly-composable config library | news.ycombinator.com | 2026-03-26 -
kumuluzee-config-mp
KumuluzEE MicroProfile Config 2.0 provides complete implementation of Eclipse MicroProfile Config 2.0 API for configuring microservices.
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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
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).
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Pkl from Apple: configuration as code language with rich validation and tooling
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A note from our sponsor - SaaSHub
www.saashub.com | 12 Jul 2026
Index
What are some of the best open-source Config projects in Java? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | pkl | 11,456 |
| 2 | owner | 937 |
| 3 | centraldogma | 664 |
| 4 | spring-dotenv | 481 |
| 5 | spring-cloud-vault | 290 |
| 6 | smallrye-config | 202 |
| 7 | gestalt | 101 |
| 8 | Configured | 70 |
| 9 | derecearthmod | 13 |
| 10 | clear-config-java | 9 |
| 11 | kumuluzee-config-mp | 0 |
| 12 | Ziphra Messenger Common | 0 |
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