Application Development with Harbour/HbIDE

From hbIDE is an open-source, multi-platform Integrated Development Environment (IDE) hosted inside Harbour's SVN repository.

The revision number is displayed in the titlebar of the main window, and according to the download page the most recent version is v1.0 r17110 09Nov2011, which makes it almost 12 years old now, yet it implements many functionalities eliminating the need of switching between multiple tools and a consistent interface.