IM, Chat, Message (instant messenger)

WhatsApp Messenger

Free 4.5 (2923096 ratings)

100,000,000+ downloads

A handy cross-platform app; good for using data instead of SMS to exchange messages. Image and video transfers also work well. IM, Chat, Message (instant messenger) MOST USED APPS

textPlus Free Text + Calls

Free 4.2 (103427 ratings)

10,000,000+ downloads

You can make unlimited free calls nationwide + text anyone in the world for free. SHOOT 'EM UP! VOIP MOST USED APPS FOR YOUR ENTERTAINMENT FEATURED APPS OPTIMIZE MY ANDROID CRUSH! KILL! DESTROY! IM, Chat, Message (instant messenger)

Tango Text, Voice, and Video

Free 4.4 (586586 ratings)

50,000,000+ downloads

A fine alternative to Skype! IM, Chat, Message (instant messenger)

Chatter

Free 3.4 (428 ratings)

100,000+ downloads

It's like Facebook for Salesforce.com users. IM, Chat, Message (instant messenger) Social Networks BUSINESS, FINANCE & MONEY

Voxer Walkie-Talkie PTT

Free 4.4 (118197 ratings)

10,000,000+ downloads

A fun alternative to SMS. Send audio clips and photos as well as text. You can also send real-time audio, just like a walkie talkie. IM, Chat, Message (instant messenger)

Skype - free IM & video calls

Free 4.0 (1086754 ratings)

100,000,000+ downloads

The popular mobile IM client. Chat with & make free calls to other Skype users. MOST USED APPS VOIP IM, Chat, Message (instant messenger)

BeejiveIM Pro

$9.99 3.6 (1831 ratings)

10,000+ downloads

IM, Chat, Message (instant messenger)