MindMeister allows for global, real-time collaboration on mind maps online through brainstorming where users can see changes as they happen. Vocaroo lets users record and share voice messages by attaching them to emails or posting online, with recordings deleted after 1 year for non-accounts but not for free accounts. SlideShare is a slide hosting service where users can publicly or privately upload PowerPoint, PDF, Keynote or OpenOffice files to view on devices or embed on sites.