1) Instant messaging client
Found on
https://www.crosswordclues.com/clue/numbuster
NumBuster! is a phone community that users can access via a mobile phone client and a Web application. Developed by NumBuster Ltd, it allows users to find contact details of any phone number, exchange information about numbers with other users and block calls and messages. The client is available for Android and Windows Phone. == History == NumBus...
Found on
http://en.wikipedia.org/wiki/Numbuster
No exact match found.
