The Appligent PDF Forms API is for Programmers who prefer to work with a library instead of an executable application like FDFMerge or FDFMerge Lite.

The Appligent PDF Forms API is the library, or engine, which drives the Appligent FDFMerge and FDFMerge Lite applications. All of the capabilities of FDFMerge are available through a C Language library interface.  As a C Library, the PDF Forms API can be called from  programming languages such as C, C++, C#, .Net, Java, etc.