Looking for Chatting App that runs on Mac, Windows and Mobile Devices

 I am looking for the chatting software that meets the following requirements:

 (1) It should run on Windows, Mac and Smart phones.
 (2) Only inter-office users would be allowed to use  the app. Skype would be a good fit except users can include/invite anyone in the world who runs Skype.
 (3) When the message is arrived, it will popup in a window or provide an alert with audible sound.
 (4) Fyi, there is Outlook with Exchange already for the users. The reason for this chatting app is to let the users chat with other users on trivial stuff that don't need to be saved in Outlook/Exchange server.

 I welcome commercial software as well.
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Bill PrewIT / Software Engineering ConsultantCommented:
I have only used there customer version for personal use (which I like), not the enterprise version, but you might take a look at Trillian for Business and see if it is a fit.


Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
sgleeAuthor Commented:

  it is a good product. Thanks for the information.
Bill PrewIT / Software Engineering ConsultantCommented:
Great, hope that works out well for you.

It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Chat / IM

From novice to tech pro — start learning today.