Javelin PDF Reader
6.6#9 in pdf readersFree planFree planAndroidiOSmacOSWindows
Visit
It suits readers opening ordinary PDFs or DRM-protected documents across desktop and mobile platforms. Publishers may value its document restrictions, expiry controls, and watermark options.
MuPDF is for developers who need document handling in desktop, cloud/server, or embedded software. It may suit teams evaluating an open-source option, provided they can meet AGPL terms or arrange commercial licensing.