PDFtoolkit ActiveX/.NET 

Gnostice PDFtoolkit is a powerful component set for Microsoft Visual Studio, Microsoft Visual Studio .NET, Borland Delphi 8 .NET and Borland C ++Builder to manage, manipulate, enhance, view and print PDF documents and process PDF eForms.
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PDFtoolkit VCL 

Gnostice PDFtoolkit is a powerful component set for Borland® Delphi? and Borland® C++Builder? to manage, manipulate, enhance, view and print PDF documents and process PDF eForms.
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VeryPDF PDF Editor 

VeryPDF PDF Editor (acrobat editor) software for viewing, edit, manipulating and printing PDF files, PDF Editor can edit PDF files easily, you can write annotations, comments, add text, change text or delete words completely, free download
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