*eBuddy Messenger For free text-based communication, eBuddy allows you to access AIM, MSN, Yahoo, Facebook Chat, GTalk, MySpace, Hyves and ICQ, keeping all of your contacts in one handy list. If all you want to do is be able to message your mates on the fly with push notifications to keep you updated, sound/vibrate alerts and emoticons, this will do the job — but if you want to personalise it with themes, you'll have to spring for the pro version. On the plus side, it uses accounts that you already have, so you have no need to build a new contact list. For iPhone (Free) For Android (Free) *WhatsApp WhatsApp is a full message replacement app, offering free messages with the capacity to send photos, video or voice messages. It uses your contact list and automatically lists anyone who also has WhatsApp installed, which makes things easier too, and it includes the capacity for group chats. Just a heads-up, the iPhone version carries a one-off charge, whereas the Android versio...