iSpring Free - iSpring Free is a free eLearning authoring tool that allows you to create responsive courses and quizzes right in PowerPoint and convert them to HTML5 or SCORM.
Wide Angle PDF Converter - Convert PDF documents to Word, PowerPoint, Excel, JPG and other formats!
Open Elearning - Free and open source software for editing courses and educational games easily.
Apowersoft PDF Converter - Apowersoft PDF Converter is a safe and stable PDF converter, which can quickly convert PDF to Word, PPT, Excel, JPG, PNG and many more formats.
Slidego - At SlideGo we regard presentation software like Powerpoint as a universal authoring tool.
Icecream PDF Converter - PDF Converter by Icecream Apps lets you convert: PDF to WORD, JPG to PDF, EPUB to PDF, DOC to PDF, PDF to JPG, etc. Windows version.