Libon is great for free calls if you can get your friends to download the app, but the subscription service leaves a lot to be desired.
Pricing not available
The new feature in the Libon app lets you IM with contacts, even if they're not Libon users themselves.
The new service, from Orange's Libon app, lets you receive messages from Libon users and reply via HTML5 in your phone's browser.
Libon is a new communications app for iPhone that let's you call and message your friends for free.