What are the six tools that facilitate collaboration according to Friedman?

While doing business or working with others, it is pertinent to find way to collaborate better and work faster. Merely sticking to routines will not entirely be helpful since we need to interface with humans and thus be seriously involved in decision making. Face-to-face interaction is definitely the most used way to create a perfect collaboration environment. The most basic form of collaboration is face-to-face.

However, there are numerous tools which are used by teams to promote collaboration: the conference call (e.g. Skype), e-mail, project management tools (e.g. Microsoft Project), tools to share documents (e.g. Google Drive), tools to share files (e.g. Dropbox) and presentations (e.g. Slideshare, Prezi), Content Management System (CMS), and blogs (e.g. Wordpress, Blogger).