21 – Whats App

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Not just a a personal messaging app, but its broadcasting and group functionalities make it a valuable tool both for educational and corporate activities.

Website:   www.whatsapp.com
Cost:  Free
Availability: Download
YEARLY RANKINGS
2015:
21
2014:
 83
2013: 86
2012: –
2011: –
2010: –
2009: –
2008: –
2007: –

Comments from some of those who selected WhatsApp as one of their top tools

Easy to form groups (large, small) and individual messages with voice & images” Amutha Navomoney, 2016

“for quick communications” Washington Braga, 2015

I use this app to create private study groups, so that all members can stay in touch with one another.” 2015

“engage fast with kids/ friends” Thomas Jenewein 2013

“text as ask tool”  Paul Jacobs 2013