My favorite mobile application for group projects is MeetUp. Users can communicate in real time using both audio and video.
Google docs allow mutiple users access and edit a same document
FDNY Work Schedule for Android
Twitter is very helpful for groups.
Email. As cheesy as it sounds email is still very, very important when it comes to group projects.
Meetup is a fantastic tool that I feel is still lurking in the shadow. People often hadn't heard of this great website!
Carmen OSU help use submit homework on time, and also it provides a platform to discuss ideas and thoughts.
GOOGLE + helps us with our group project, we share our thoughts and ideas on it. We can also comment on other people's ideas.
TeamViewer help us in connecting with any other PC around the world in few seconds.
QGIS v2.2 : A Free and Open Source Geographic Information System
My personal tool for my projects.
My personal tool with my partners
MS SharePoint works with tablets, phones and apps!!
Prezi makes it easy for groups to work together from remote locations.
Teamwork: Lead, Manage Teams
Perfect for project management, Asana is a web and mobile application designed to enable teamwork doing efficiently