Bullzip PDF Printer - Free PDF Printer - Create PDF documents from Windows applications. Supports Citrix, Terminal Server, Windows 8, Windows Server 2012, Windows 7, Vista, 2008R2, 2008, 2003, and 2000. Works with 32 and 64 bit systems.
Saint Paint Studio - Saint Paint - The Essential Image Editor
Ghostscript - Documentation.
Stet.io - Stet.io is a high-quality pixel management platform that allows editing the pictures with online commands or multiple options with real-time effects or filters.
ApowerPDF - ApowerPDF is a versatile PDF editor which also features as PDF converter, viewer, creator and more. It provides a perfect solution for all users.
ImageForge - - ImageForge Standard Freeware Edition: