Library to create and manipulate PDF documents in Java and C#
The Apache PDFBox library is an open source Java tool for working with PDF documents
"I have noticed that content extraction is faster in itext but searching words using regex in the content extracted by itext takes longer time than pdfbox"
from question "Any difference in content extracted by pdfbox and itext"
"Start with pdfbox as it s text extraction abilities are better than itext s"
from question "PDF to text tool or Java library?"
"On the downside pdfbox is less mature than itext so it has less features and documentation available"
from question "PDF in XPages without using iText?"