MySQL - The world's most popular open source database
FlexiSPY - FlexiSPY is the original "phone spy" software - it's been on the market since 2005.
PostgreSQL - PostgreSQL is a powerful, open source object-relational database system.
XNSPY - XNSPY is the world’s most trusted cell phone spy software to monitor any smartphone and tablet remotely. It works on a range of devices including Android phones, Android tablets, iPhones and iPads.
SQLite - SQLite Home Page
iKeyMonitor - iKeyMonitor is a mobile app for both iPhone and Android devices that with parental control capabilities and phone monitoring features.