See http://1t3xt.com/about/history.php?branch=history.21&node=216.
http://1t3xt.com/about/history.php?branch=history.21&node=212
http://www.1t3xt.com/about/history.php?branch=history.21&node=211
http://www.1t3xt.com/about/history.php?branch=history.21&node=210
http://www.lowagie.com/iText/history.html#V200
iText# (iTextSharp) is a port of the iText open source java library written entirely in C# for the .NET platform. iText# is a library that allows you to generate PDF files on the fly. It is implemented as an assembly.
See http://www.lowagie.com/iText/history.html#V200.