KodeWeave is an online code editor that allows developers to quickly and easily develop, test, and share their web applications and HTML/CSS/Javascript code snippets. It is designed to be an intuitive and robust development environment that enables developers to focus on the code, not the technology. KodeWeave provides an easy-to-use editor window, a real-time preview of the code, and a wide range of language support. It also offers a library of ready-made HTML/CSS/Javascript snippets, allowing developers to quickly and easily customize their code. KodeWeave is a great tool for quickly creating and testing web applications, or for trying out new ideas.
Discontinued Aptana is still under development on GitHub but the latest version, 3.6.1, was released in October 2014. It lacks Java 8/9 features, as well as more recent JavaScript and HTML 5 features.