Ziteboard - Ziteboard is an zoomable online whiteboard that lets team to collaborate in real-time.
Adobe Photoshop - Adobe Photoshop is a webtop application for editing images and photos online.
Voynetch - Share your visual notes and graphic recordings.
GIMP - GIMP is a multiplatform photo manipulation tool.
AuthorBee - Organize Twitter around your interests
Affinity Photo - Affinity is the imaging and design suite for creative professionals exclusively for Mac.