platform:
Chat and share content with anyone in your address book free of charge
Kik 8.8.1.2261
Message friends with this app that doesn't need your phone number but has limited security features
Viber 5.5.2.28
Video call friends, text and send files using one of the most popular services out there
Truecaller 5.83
Block contacts and always know who's calling with this neat application
All Email Providers 1.3
Check all of your emails in one application on your phone
Telegram 3.1.3
A cleaner and more secure cross-platform messaging app compared to others on the market
Sync.ME 2.11.4
Identify scam calls and block numbers using this neat application on your phone
ExDialer 194
Organize all contacts on your phone using this neat dialer and contacts app
SMS Lock 2.6.0
Lock text messages you receive with this nifty application for Android phones
Skype
Call and message friends free of charge with one of the most reliable service available out there
Contacts + 3.30.10
Manage your contacts, link accounts and sync them into the cloud
ShoutMe 0.52
Chat with friends, share files and schedule a meeting using this neat app
FloatNote 2.0
Never forget about important things you wanted to talk about with the caller
Caller ID and Block 4.9.0
Never answer to spam calls again, block contacts and get stats on conversations and text messages you receive
LINE: Free Calls & Messages 4.7.1
Make free calls and chat with friends on one of the most popular messaging apps out there
Simple Dialer Widget 1.5.2
Simplistic dialer widget that would make it easier to place calls