Canva - Canva is a graphic-design platform with a drag-and-drop interface to create print or visual content while providing templates, images, and fonts. Canva makes graphic design more straightforward and accessible regardless of skill level.
Glitterly - The video editor for making short video clips of your apps
Adobe Photoshop - Adobe Photoshop is a webtop application for editing images and photos online.
InVideo.io - Create thumb-stopping videos in mins for just $10/month even if you've never edited a video before!
Scribus - Scribus is a desktop publishing (DTP) application.
Coub - Coub is an app that features GIFs, but the GIFs that you select and send to other people have sounds.