Mixbook - Mixbook is an online photo design tool and product service that allows customers to design customized photo books, cards, calendars, and photo prints through its online interface.
Slidesgo - An extensive catalog of free Google Slides themes and PowerPoint templates.
Bitstrips - Bitstrips is fun and engaging app that lets you create your own comic strips right from your mobile device. It's essentially a social network that allows its users to share self-made comics as opposed to photos, memes, videos, or other posts.
SlideModel.com - Create attractive presentations with our professional PowerPoint templates, slide designs, and themes. Use our PPT templates and slide designs to give unique appearance to your presentation.
SlideBoom - Upload and Share PowerPoint presentations with your family, friends, colleagues, clients and the whole world
SlideTeam - Transform rough sketches, notes into professional PowerPoint presentations.