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.

H5P - H5P is a free and open-source content collaboration framework based on JavaScript.

Slidego - At SlideGo we regard presentation software like Powerpoint as a universal authoring tool.

Articulate Storyline - Articulate Storyline is a program that allows you to create interactive courses of any kind with templates and a simple system. There is a free trial offered so that you can determine whether you want to use the program further or not.

Leawo PowerPoint to Video - With Leawo PowerPoint to Video converter, you can convert PowerPoint file to video in all pop formats, like convert PowerPoint to AVI, WMV, MPEG, etc, and put PowerPoint on portable devices like iPod, iPhone, Pocket PC, PSP, etc.

App-eLearn - The eLearning authoring tool for fully responsive digital learning content | Native xAPI enabled | WCAG AA accessibility | Cross-browser compatible | Platform agnostic | SCORM compliant