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.
Ventura Tools
Ventura Tools was founded by Dutch software developer Frank T. van de Ven and associates. They are a small and independent software firm, competitive and determined to be the best in what they do. Support services are their highest priority and they are highly responsive to technical support and product enhancement requests from customers. For more than 25 years they have been developing components and frameworks to help software development teams become highly productive and successful and are passionate about designing and writing software that is extremely reliable and easy to use.
Qoppa Software
Qoppa Software was founded in 2002 in Atlanta and specializes in the development of high-end libraries and applications to work with PDF documents. It provides solutions to companies all over the world ranging from small businesses to Fortune 500 companies. Being a small, highly focused company allows it to remain flexible to work with customers individually to deliver a solution that fits their unique needs in terms of licensing, implementation and deployment. Additionally, Qoppa Software prides itself in offering high-level, responsive technical support at an expert level, providing access to development staff when necessary.