Digsby is one of the popular IM soft which not only support IM but also support email and social network. This one is perfect chatting messanger. Its design and outline is good.Nimbuzz user if you want to add your nimbuzz id with this IM you have to do the followings
1. Create account with digby then login with that id
2. After log in click tools then account then jabber account
3. jabber id (write your nimbuzz id with @nimbuzz.com)
4. Nimbuzz password
5. Click on advance then IM server write (openfire.nimbuzz.com)
6. Then ok after that you will connected with your nimbuzz account