GotToMeeting for group meetings/calls Skype For Business for one-on-one company calls & PSTN calls Skype for VoiP with external parties Yammer for company la

GotToMeeting for group meetings/calls Skype For Business for one-on-one company calls & PSTN calls Skype for VoiP with external parties Yammer for company latent awareness/news sharing TasksInaBox for collaboration planning and task followup Doodle for meeting scheduling Sharepoint for document repository