Mightytext - Send & Receive SMS Text Messages from your computer. Sync'd with your Android #
WaStat – WhatsApp tracker - WaStat – WhatsApp tracker app shows the last online time of a phone number at a glance, so you can contact them whenever they get online to share something important to them.
Site2SMS - Site2Sms.com offers Free Unlimited 260 Character's Text Sms to any mobile number in India &...
Last seen tracker for WhatsApp - Last seen tracker for WhatsApp app helps you save all your WhatsApp data on the internal storage to view all your recent conversations at a glance.
Textfree - Send text/SMS messages from your PC from a free phone number
Whatsdog Last Seen - Whatsdog Last Seen app shows the accurate last online time of all the phone numbers in your contact list to message them right on time and get an instant reply from them.