A JavaFX application transpiler. Write your Web Application in JavaFX and WebFX will transpile it in pure JS.

ChakraCore is an open source Javascript engine with a C API.

CommonMark/Markdown Java parser with source level AST. CommonMark 0.28, emulation of: pegdown, kramdown, markdown.pl, MultiMarkdown. With HTML to MD, MD to PDF, MD to DOCX conversion modules.

The openjfx repo has moved to:

Asciidocs for JavaFX Documentation Project

A Java framework for creating sophisticated calendar views (JavaFX 8, 9, 10, and 11)

Certbot is EFF's tool to obtain certs from Let's Encrypt and (optionally) auto-enable HTTPS on your server. It can also act as a client for any other CA that uses the ACME protocol.

Java Bindings for V8

JavaScript 3D Library.

How well does your browser support HTML5?

MapDB provides concurrent Maps, Sets and Queues backed by disk storage or off-heap-memory. It is a fast and easy to use embedded Java database engine.

PDF Reader in JavaScript

Twitter4J is an open-source Java library for the Twitter API.

High Performance Primitive Collections for Java

jsoup: the Java HTML parser, built for HTML editing, cleaning, scraping, and XSS safety.

XML/XHTML and CSS 2.1 renderer in pure Java