Debenu Quick PDF Library is a powerful royalty-free PDF developer SDK - including over 500 functions for use with Delphi, C, C#, C++, ASP, VB6, VB.NET, VBScript, PHP, PowerBASIC, and more, using either the ActiveX, DLL or Delphi version of the library.
Quick PDF Library also includes a full built-in PDF rasterizer allowing PDFs to be rendered to the screen or printer.
OK, so you want to stamp your document. Maybe you need to give reviewers some advice about the document's status or sensitivity. This tip from author Ted Padova demonstrates how to add stamps with the Stamp Tool along with related comments.