Altova XMLSpy Enterprise Edition is an advanced XML editor and development environment with graphical data mapping, validation, and debugging tools for any XML technology.
CodeBox is an open-source, cross-platform code editor and file manager designed to help developers quickly and easily code, organize and manage their projects.
The lightweight programme known as Class Editor is, as its name suggests, made to help you explore and change the underlying structure of any Java class binary file as well as create classes from scratch.