Devhelp is an API documentation browser for GTK+ and GNOME. It works natively with GTK-Doc (the API reference system developed for GTK+ and used throughout GNOME for API documentation). If you use GTK-Doc with your project, you can use Devhelp to browse the documentation. See the README for more information.
Text editor integration: there are Devhelp plugins for gedit, Vim and Emacs, see the misc directory.
Getting in Touch
JDevhelp - Make Javadocs browsable using Devhelp