Python

sqlmap

sqlmap is an open source penetration testing tool that automates the process of detecting and exploiting SQL injection flaws and taking over of database servers.

Yowsup 2

Yowsup is a python library that enables you build application which use WhatsApp service. Yowsup has been used to create an unofficial WhatsApp client Nokia N9 through the Wazapp project which was in use by 200K + users as well as another fully featured unofficial client for Blackberry 10