oandbackup - Make backups of selected apps on your device and restore from those backups.
Task Killer - Task Killer is an application which automatically forces other applications to stop which are running in the background, making you enhance your smartphone performance and battery life.
Titanium Backup - Titanium Backup is a very old backup app that has been around since the early days of Android. In fact, it's one of the few apps that covers all versions from 1. Read more about Titanium Backup.
Code Editor - Code Editor is a mobile application that enables you to create apps and programs on Android by allowing you to edit codes.
SMS Backup+ - Backup Android SMS, MMS and call log to Gmail / Gcal / IMAP - jberkel/sms-backup-plus
Advanced Task Manager - End applications, speed up phone, and save battery.