Siberix PDF Library 

Siberix PDF Library is a pure C# component for .NET designed to create industry standard PDF files. It provides a variety of methods to format text, create complex layouts, draw geometric figures and paths, insert images and other objects.
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Just Forms PDF : Java PDF Library 

The JustFormsPDF library is a Java class library for filling or editing interactive PDF forms on-the-fly. This PDF library requires no other packages to be installed and will run easily from any Java project including JSP, Servlets and EJB.
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eXPert PDF COM Library 

Create pdf documents from windows applications
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