Messenger apps, email readers, and free chat apps, whether its video apps, or VOIP phone apps, are all hugely popular, thanks to opportunities they open up for free, safe, and instant communication and messaging. As you'd expect, some of the best messaging and chat apps are from the big names, such as WhatsApp, Skype, and Yahoo! Messenger. But there are a whole host of cool apps out there, often from publishers you may never have heard of before. Our advice is to check out some of these lesser-known apps as well as the famous names, as you might just find a real gem hiding in the download lists.