ComPDFKit
ComPDFKit enable developers to integrate PDF Annotations and Format Conversion, Digital Signature, Smart Forms, OCR, Redaction, and more in to their applications on Windows, macOS, iOS, Android, and the web through their PDF SDKs. Their aim is to offer the most comprehensive library to shorten the project development cycle and to continuously improve their SDK products to meet developer's future requirements as they change and projects evolve.
Antenna House
Founded in 1984, Antenna House, Inc. is a global software company that works to make documentation development and processing easier every single day. Antenna House specializes in providing enterprise solutions for high volume, automated document formatting, and conversion needs. Their signature product, AH Formatter, is a powerful PDF formatting engine that is based on the W3C recommendations for XSL-FO and CSS and has long been recognized as the most powerful and proven standards-based formatting software available. Today, Antenna House software is used worldwide to produce millions of pages daily in a wide range of industries including financial services, aerospace/defense, automotive, telecommunications, and health care.