PDFDancer - Edit PDFs at a higher level: text, fonts, graphics - all preserved. Powerful PDF editing SDK with a simple API and self-hosting options. Start free, no signup required.

ComPDF - Offer a top-quality PDF SDK, PDF API, and PDF AI solution for companies and developers. It enables you to integrate PDF document generation, viewing, annotation, editor, conversion, form filling, signing, parsing, and more into your applications.

IronPDF - SDK for creating and editing PDFs.

BFO Java PDF Library - PDF library API for creating, editing, displaying and printing Acrobat PDF documents.

AODocs - AODocs is the document management solution recommended for G Suite. Secure your documents, structure your content, & automate your processes

Docomotion - Docomotion offers tools for designing and generating all types of transactional and operational business documents.