You can use OLE drag and drop to add drag and drop support within your own application. There is nothing to stop your application from being both a drop source and a drop target or from accepting dropped objects from itself.

Software for developers

Delphi Components
.Net Components
Software for Android Developers

More information resources

MegaDetailed.Net
Unix Manual Pages
Delphi Examples

Databases for Amazon shops developers

Amazon Categories Database
Browse Nodes Database