Presentii - Imagine a tool that lets you capture audience interest in your presentation content as you present.
Inkscape - Inkscape is a free, open source professional vector graphics editor for Windows, Mac OS X and Linux.
Pingo - Optimize images for the web quickly 🖼️⚡
Sketch - Professional digital design for Mac.
Imakiku - Imakiku is an audience response system for real-time voting, posting comments, and surveying.
Affinity Designer - Professional creative software, exclusively for Mac.