For daily group communication the application WhatsApp for Iphone and Android was used. It allowed a cheap easy communication between all participants and groups.
The iphone application "find my friends" was used to have always information were grup members and groups are located.
Skype was used for daily conferences between Cairo and Weimar. It was used on fixed computers or also on mobile devices, so architectural exhibitions were shown to the students abroad or explanations were given about certain artworks at the documenta.
For sharing files and documentation this wiki was used.