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). We're always excited to hear from you.Freeware programs can be downloaded used free of charge and without any time limitations. AND MUCH MORE: Share your location, exchange contacts, set custom wallpapers and notification sounds, email chat history, broadcast messages to multiple contacts at once, and more. OFFLINE MESSAGES: Even if you miss your notifications or turn off your phone, WhatsApp will save your recent messages until the next time you use the app. QUICKLY CONNECT WITH YOUR CONTACTS: Your address book is used to quickly and easily connect you with your contacts who have WhatsApp so there's no need to add hard-to-remember usernames. No more confusion about whether you're logged in or logged out. ALWAYS LOGGED IN: With WhatsApp, you're always logged in so you don't miss messages. SAY NO TO USERNAMES AND PINS: Why bother having to remember yet another username or PIN? WhatsApp works with your phone number, just like SMS, and integrates seamlessly with your phone's existing address book. Chat with your friends around the world and avoid international SMS charges. NO INTERNATIONAL CHARGES: There's no extra charge to send WhatsApp messages internationally. WHATSAPP WEB: You can also send and receive WhatsApp messages right from your computer's browser. GROUP CHAT: Enjoy group chats with your contacts so you can easily stay in touch with your friends or family. Also, you can't access 911 and other emergency service numbers through WhatsApp). WhatsApp calls use your phone's Internet connection rather than your cellular plan's voice minutes. FREE CALLS: Call your friends and family for free with WhatsApp Calling, even if they're in another country.

MULTIMEDIA: Send and receive photos, videos, documents, and Voice Messages. There are no subscription fees to use WhatsApp. WHY USE WHATSAPP: NO FEES: WhatsApp uses your phone's Internet connection (4G/3G/2G/EDGE or Wi-Fi, as available) to let you message and call friends and family, so you don't have to pay for every message or call.

Switch from SMS to WhatsApp to send and receive messages, calls, photos, videos, documents, and Voice Messages. WhatsApp uses your phone's Internet connection (4G/3G/2G/EDGE or Wi-Fi, as available) to let you message and call friends and family. WhatsApp Messenger is a FREE messaging app available for Windows Phone and other smartphones.

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