ExpertPdf Toolkit is a suite of PDF tools that cover the majority of PDF related needs in applications written using the .NET Framework. The Toolkit contains a lot of powerful components: html to pdf converter, pdf creator, pdf merger, pdf splitter, pdf security library, pdf to text converter, pdf to image converter (new), rtf to pdf converter, pdf images extractor, pdf viewers.
In business since 2007, ExpertPdf has just released version 10 of the toolkit.