Favorite hidden gem library?

• Awaitility

  1 3,579 0.0 Java

  Awaitility is a small Java DSL for synchronizing asynchronous operations

  

  I hope everybody knows https://github.com/awaitility/awaitility by now.

• Kaitai Struct

  13 3,665 0.0 Shell

  Kaitai Struct: declarative language to generate binary data parsers in C++ / C# / Go / Java / JavaScript / Lua / Nim / Perl / PHP / Python / Ruby

  

  And I love https://kaitai.io/ for data parsing. Not commonly required, but when it is, it's so good!

• Onboard AI

  getonboard.dev

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• Lombok

  15 12,347 8.7 Java

  Very spicy additions to the Java programming language.

  

  Lombok https://projectlombok.org

• Mockneat

  1 521 0.0 Java

  MockNeat - the modern faker lib.

• jstachio

  22 156 9.4 Java

  Java type safe statically compiled mustache

  

• hypersistence-utils

  1 2,152 8.4 Java

  The Hypersistence Utils library (previously known as Hibernate Types) gives you Spring and Hibernate utilities that can help you get the most out of your data access layer.

  The Hibernate Types project.

• avaje-inject

  6 180 0.0 Java

  Dependency injection via APT (source code generation) ala "Server-Side Dagger DI"

  

  Avaje is pretty cool, it's a compact DI library based on APT. https://github.com/avaje/avaje-inject

• InfluxDB

  www.influxdata.com

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• avaje-http

  3 55 8.9 Java

  Controller generation for Javalin, Helidon SE.

  

  It also has a library that generates controllers for some micro frameworks like javalin or helidon. https://github.com/avaje/avaje-http

• easy-random

  0 1,531 0.0 Java

  The simple, stupid random Java beans/records generator

  

  Easy-Random

• protostuff

  0 1,975 0.0 Java

  Java serialization library, proto compiler, code generator

  

• StreamEx

  0 2,107 0.0 Java

  Enhancing Java Stream API

  I really like StreamEx. I do not know why people do not use it often, the syntax is just wonderful.

• html-parser-benchmark

  0 7 4.6 HTML

  html parsers benchmark for several libraries

  Jericho is seriously a crazy good library. I dont think most people even know about it. Definitely a hidden gem for sure. A while ago I tested multiple HTML parsers and Jericho came up ahead, by a massive margin, more than 3 times faster than jsoup for extracting stuff from html: https://github.com/newk5/html-parser-benchmark

• Javet

  0 479 0.0 Java

  Javet is Java + V8 (JAVa + V + EighT). It is an awesome way of embedding Node.js and V8 in Java.

  Javet is one of a kind. No other library like it out there today. Not widely known yet as its kinda new.

• dynamics

  0 24 10.0 Java

  Java library for handling nested dynamic data

  Dynamics for parsing xml easily and quickly

• Nitrite Database

  0 777 7.3 Java

  Java embedded nosql document store

  

  Nitrite embedded DB for java objects

• webviewjar

  0 85 0.0 Java

  Java port of the Zserge Webview. Tiny cross-platform WebView

  webviewjar for creating electron-like applications but without the electron overhead

• jimgui

  0 175 0.0 Java

  :sparkling_heart: Pure Java binding for dear-imgui

  jimgui the most lighweight imgui java binding

• fastexcel

  1 552 0.0 Java

  Generate and read big Excel files quickly

  

  fastexcel the fastest xlsx generation library

• Vert.x

  7 13,859 9.2 Java

  Vert.x is a tool-kit for building reactive applications on the JVM

  

  Eclipse Vert.x - Add amazing Async to any Java stack

• openapi-generator

  59 18,355 9.8 Java

  OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec (v2, v3)

  

  OpenAPI Generator - Simplify writing, consuming, and testing REST APIs.

• Java Faker

  2 4,408 0.0 Java

  Brings the popular ruby faker gem to Java

  

  JavaFaker for generating random data https://github.com/DiUS/java-faker

• methanol

  1 201 0.0 Java

  ⚗️ Lightweight HTTP extensions for Java

  https://github.com/mizosoft/methanol - Lightweight HTTP extensions for Java

• SaaSHub

  www.saashub.com

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