PDFTextStream

PDFTextStream is a powerful library for .NET and Java designed to enable you to get the text, metadata, and form data you need from PDF documents. PDFTextStream includes PDFTextStream for Java and PDFTextStream for .NET.
PDFTextStream for Java is written in 100% pure Java, with no native components or dependencies. Its only requirement is a compliant Java 1.4 (or higher) JVM.
PDFTextStream for Java  is suitable for use in demanding desktop and server applications, including those with significant concurrency requirements. It has been designed to be amenable to parallelization, so that you can fully utilize your hardware and infrastructure investments when processing PDF documents without worrying about locking or race conditions.
Of course, being a Java library, PDFTextStream may be used by any JVM language that supports interoperability with Java APIs, including Clojure, Scala, Groovy, JRuby, Jython, and so on.
PDFTextStream for .NET is produced by translating the standard PDFTextStream for Java binary into a pure managed .NET assembly. This translation process is complete, and does not entail any side effects that impair the functionality, robustness, APIs, or performance of PDFTextStream for .NET.
All of the concurrency and parallelism guarantees provided by PDFTextStream for Java apply to its .NET cousin.
As with PDFTextStream for Java, PDFTextStream for .NET may be used by any .NET language, including C#, VB.NET, F#, managed C++, and so on.Limitations in the unregistered versionWhile you evaluate PDFTextStream, it will:
Randomize approximately half of all digits (0-9) in text extracts
Slightly alter some metadata attributes (such as bookmark titles, URL fields in extracted hyperlinks, etc)