Requesting For Opensource S/W

[Gobinath]

Hi Support,

we have planned to open new company for cloud support so we have to
communicate with colliquies for interaction purpose.
could you please suggest perfect messenger for communicate with
officemate(skype,linq) in open-source it would be helpful to us.

please suggest opensource software list for messenger (chating,file
transfer,video conference);

Regards,
Raish.