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.
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!
oandbackup - Make backups of selected apps on your device and restore from those backups.
My Contacts Backup - My Contacts Backup app enables users to keep track of their contacts list to merge or delete all the duplicate contacts.
MIUI Backup - built in backup manager in xiaomi devices
My Contact Easy Backup Restore - My Contact Easy Backup Restore app provides features through which users can manage their phone book by recovering deleted contacts, adding new contacts, deleting existing contacts, and editing contacts, etc.