Mashable - A technology that helped start a global movement is now being put into the hands of the people. TextSecure, an Android app that encrypts text messages and is popular among activists in many countries, is now open source, thanks to Twitter.
Twitter acquired the company that makes TextSecure, Whisper Systems, last month. In countries where governments have more strict control over wireless networks, Whisper Systems' apps have been extremely helpful to dissidents wanting to communicate and organize securely.