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.
oandbackup - Make backups of selected apps on your device and restore from those backups.
Seedvault - A site about seeds!
SMS Backup+ - Backup Android SMS, MMS and call log to Gmail / Gcal / IMAP - jberkel/sms-backup-plus
Apps2SD - Apps2SD: Best app to move/link android apps to SD card, manage your device and boost performance - Link2SD, App2SD, Foldermount, Greenify, Busybox alternative.
Wide Angle Contact Transfer - Contact Transfer- easily manage contacts between iPhone, Android & PC with this Windows software. Transfer contacts directly between devices and edit them from your PC!