Vitaliy Shibaev is a developer and co-founder of Bit Miracle
, company developing the Docotic.Pdf and LibTiff.Net libraries.
allows to easy create, protect, modify PDF documents in .NET. It also can be used for text extraction and PDF forms filling. It has clean and powerful PDF API which will help you to create professional quality documents.
is a fully managed port of well-known TIFF library. It is fully open source and free for use. API almost the same as in original libtiff. There is a also Silverlight version.