ImageMagick - ImageMagick is a software suite to create, edit, and compose bitmap images.
Adobe Acrobat DC - Make your job easier with Adobe Acrobat DC, the trusted PDF creator. Use Acrobat to convert, edit and sign PDF files at your desk or on the go.
OpenCV - OpenCV is the world's biggest computer vision library
Wondershare PDFelement - All-in-one PDF editor
Cloudinary - Cloudinary is a cloud-based service for hosting videos and images designed specifically with the needs of web and mobile developers in mind.
Foxit Reader - Foxit Reader is a free and light-weight multi-platform PDF document viewer.