There are many different open source licenses but they all must comply with the Open Source Definition - in brief: the software can be freely used, modified and shared. Programs released under this license can be used at no cost for both personal and commercial purposes.

Open Source software is software with source code that anyone can inspect, modify or enhance.

Freeware products can be used free of charge for both personal and professional (commercial use). Its audio quality during calls is pretty good by general standards.Freeware programs can be downloaded used free of charge and without any time limitations.

Viber is a good alternative in the wide range of instant messaging apps for Android. Thanks to this, you can continue your conversations on your computer, making and receiving calls no matter where you are. It's better if this connection is WiFi or 3G, since using this app with a data plan can be more expensive than using the phone.Ī positive element is that besides the mobile app, it has a client for Windows and Mac. Once you install the app on your device, all you have to do is let it access your contact list, and in a matter of seconds you can start calling with pretty good audio quality and no expenses except the Internet service. In fact, within the app, you can find a sticker store where you can find new tags to buy and use in conversations. Thanks to Viber, you can share text messages, photographs, messages with videos or voice, locations, emoticons, and tags. With it, you can send text messages and make phone calls for free, so long as you have an Internet connection. Viber, which was originally called Viber - Free Phone Calls, is an application which is similar to Skype.

For iphone instal Viber 20.3.0