Re: IM+ alternatives?
Line : The Line messaging app is available for almost every computer and mobile platform, including Windows, OS X, the iPhone, Android, BlackBerry, Windows Phone, Nokia’s Asha and even Firefox OS.
Kik: It also integrates a web browser into the application allowing users to browse content and share it directly with their friends.
BBM: BlackBerry’s Messenger is the grandfather of the phone instant messaging apps. Originally only available as an integral part of BlackBerry’s smartphones, allowing secure instant messages to be sent between BlackBerry users, BBM was released for both Android and the iPhone in September 2013 making it cross platform for the first time.
Viber: All users can send text, pictures and video messages using Viber, but voice calling and some other features are limited to the iPhone, Android and Windows Phone.
Google Hangouts: Available on the desktop, Android and iPhone, Hangouts allows users to send text and images, as well as hold video calls and group messaging with read states and typing indicators. Hangouts is also integrated into Gmail.
Skype: Available for Android, the iPhone, Windows Phone and BlackBerry, as well as desktops, home phones TVs and games consoles, Skype allows you to send text messages, images, videos, voice messages and send group messages.
There are a plethora of other messaging apps out there, just search the 'net