BaseTemplates - The easiest way to build your pitchdeck and raise money
SlidesPPT - Beautiful free presentation templates for Google Slides
Unicorn Pitch - Facelift design service for pitch decks
Slidebean - Presentations that design themselves
Slides - Slides is a place for creating, presenting and sharing presentations. The Slides editor is available right in your browser. Unlike traditional presentation software, like PowerPoint, there's no need to download anything.
Keynotopia - Prototyping straight into Keynote or Powerpoint