The Zello Walkie Talkie app is quickly becoming the one to one, and one to many, secure communications app for protestors around the world. That’s because Zello (not to be confused with Zillow) is secure, light weight, available in many languages, works over 3G, GPRS, Edge, and wifi, and it’s free. There are versions for iPhone, Android, Blackberry, and PC. It’s available in Chinese, Czech, English, Finnish, French, German, Hungarian, Italian, Polish, Romanian, Russian, Spanish, Arabic, Bulgarian, Dutch, Hebrew, Indonesian, Japanese, Portuguese and Swedish.