✨ The best JVM observability, troubleshoot, and optimize. 🚀 Unlock deep insights instantly via our dashboard, CLI and Harness. 📊

⚙️ Convert HTML to Markdown. Even works with entire websites and can be extended through rules.

Enhancing Java Stream API

A Java port of Daniel Lemire's fast_float project

A tiny JSON parser library with a pretty printer

The hypermedia framework.

A Java library for building modern terminal user interfaces.

Æsh is a Java library for handling console input.

Simple library for playing sounds and music in Java

Bitmap & tilemap generation from a single example with the help of ideas from quantum mechanics

The most minimal cross-platform GUI library

LITIENGINE 🕹 The pure 2D java game engine.

🎮 High-performance Java emulator for Nintendo Gameboy and Gameboy Color hardware.

Run your GitHub Actions locally 🚀

Save loaded images in nested iframe pages

Scan PostgreSQL Instance for potential problems. pg_gather is a SQL-only script leveraging the built-in features of psql.

JSON without fuss

Mirror of the official PostgreSQL GIT repository. Note that this is just a *mirror* - we don't work with pull requests on github. To contribute, please see https://wiki.postgresql.org/wiki/Submitti…

JavaScript/Python/etc Rison

High-performance JSON masker library with no runtime dependencies

A simple SMTP Server for Testing purposes. Emails are stored in an in-memory database and rendered in a Web UI

1️⃣🐝🏎️ The One Billion Row Challenge -- A fun exploration of how quickly 1B rows from a text file can be aggregated with Java

An extremely easy way to perform background processing in Java. Backed by persistent storage. Open and free for commercial use.

A Java JSON Library intended to be easy to learn and simple to teach

KotlinX multiplatform date/time library

A Kotlin multiplatform library for arbitrary precision arithmetics

A fast Java JSON schema validator that supports draft V4, V6, V7, V2019-09 and V2020-12

🚄 FASTJSON2 is a Java JSON library with excellent performance.