The Centre for Instructional Technology (CIT) has launched a social messaging service called TeamUp.
TeamUp allows you to create teams with whom you can chat, exchange links and files. This can be done via web, mobile or desktop apps.
Unlike other chat apps, you need not share your phone number to use it. Also, replies to messages can be threaded so that communication is kept in context.
In TeamUp, you can group chat with everyone in a team. For large teams, you can set up smaller, private groups. Like most messaging services, you can also direct message other members in your team.
The service is open to staff and students. TeamUp can be used for modules, projects or any other situation where group communication is needed.
A guide to TeamUp is at https://wiki.nus.edu.sg/display/cit/TeamUp.
NUS students who would like to use for projects and other communication among themselves please use https://teamupstu.nus.edu.sg.
If you need more information on this service, please contact Uday.