They're now owned by "copyright trolls".

They hit up a company I know because their web-crawler found a PDF that someone generated using their library over a decade ago.

https://beemanmuchmore.com/software-licensing-trolls-apryse-...

I'd avoid it.

Yeah, it's basically dying and living on old fame. We had to buy a license a few years ago for a customer who needed support for some things that PDFBox did not support, Of course it's not just a license, you have to buy multiple licenses for production, development and so on. It was okay until we hit a bug, iText could not read some form fields correctly and was basically changing the PDF contents on save. We opened a support ticket with all the details, sample files and code to reproduce. The ticket stayed open for a year. After a year they asked us to pay for more support. We showed them the open ticket and never heard from them again.