SIM Contacts Manager - SIM Contacts Manager app offers features that let you insert your sim card to your mobile phone to manage, edit, add, and delete your contacts right at your fingertips.
Dropsync - DropSync is a super fast and flexible folder synchronization tool.
X-Transfer - X-Transfer is an app by WebToGo that comes up with features to help you in performing data transfer between your smart devices in a few simple steps.
Share Contacts PRO - Share Contacts PRO app comes up with features to help users in editing a contact from your phonebook to change the name, phone number, address, and other details without much of a stretch.
SMS Backup+ - Backup Android SMS, MMS and call log to Gmail / Gcal / IMAP - jberkel/sms-backup-plus
vCard Export Import(Lite) - vCard Export Import(Lite) app allows you to export your phone numbers in your contact list to the internal storage in vcard, vcf, txt, CSV, and various other file formats.