Nimbuzz Messenger is an app for communicating with contacts and social media friends. The software allows cost-free calling over an internet connection, but the other party must also have the app installed. Once the program is installed, the user can integrate the app with existing social media accounts on Facebook, Yahoo Messenger and Gtalk. Then, Nimbuzz Messenger can be used to send messages to contacts on all of those accounts, keeping a user's social media messaging on a single app instead of many. The app can be used for traditional phone calling, but call time must be purchased.

Nimbuzz Messenger is currently on its fifth major version and requires Android operating system version 4.03 or greater. It's supported in 13 languages: English, Turkish, Korean, Hindi, Russian, Arabic, Japanese, Chinese, Portuguese, Spanish, Farsi, Malaysian and Dutch. The download takes up 20.24 megabytes of space, and the software requires 46 permissions, which obviously include access to the device's phone and internet connection as well as the ability to send and receive SMS messages.