Social Engine 4 (se4) Portuguese Language Pack(Core ,admin + Music, Groups, Album, Chat, Polls, Events, Classifieds, Blogs)
Advanced Friends Inviter + Rating + UserNotes + Radcode core+ Listing plugin! (Free)
1. No need of any script langauge or adding any code any where!
2. Just Extract the files in application/languages folder (chmod 777) to pt folder!
3. It will create the language drop down menu automatically! Easy and Simple
4. All plugins and core are in separate file so easy to edit !
Its very clean and professional translation