Skitch
Description: Skitch is a free screenshot annotation and editing tool for Mac and iOS. It allows you to quickly markup, crop, and share images and screenshots.
Type: software
zipBoard
Description: zipBoard is an online virtual whiteboard and collaboration software. It allows teams to brainstorm ideas, diagram concepts, annotate documents, and collaborate remotely in real-time. Its key features include infinite canvases, screen sharing, video chat, sticky notes, shape tools, and integrations with Google Drive and Dropbox.
Type: software