Eclipse Che is an open source project that allows anyone to contribute to a project without installing software. Che defines a new type of workspace that is composed of projects...
Developer workspaces to modify, run and debug code in the cloud or on premises.
Visual Studio Code
Code Editing. Redefined. Build and debug modern web and cloud applications. Code is free and available on your favorite platform - Linux, Mac OSX, and Windows.
A hackable text editor for the 21st Century
A Free, open source, cross platform C,C++,PHP and Node.js IDE
Aptana Studio is an Eclipse-based IDE with support for many webapp technologies. It basically feels like Eclipse but slimmed down for webapps and focused on the popular framework...