Apache PDFBox is an open source pure-Java library that can be used to create, render, print, split, merge, alter, verify and extract text and meta-data of PDF files.

Open Hub reports over 11,000 commits (since the start as an Apache project) by 18 contributors representing more than 140,000 lines of code.

PDFBox has a well established, mature codebase maintained by an average size development team with increasing year-over-year commits.

[4] Preflight was originally named PaDaF and developed by Atos worldline, and donated to the project in 2011.

[5] In February 2015, Apache PDFBox was named an Open Source Partner Organization of the PDF Association.