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With Twilio Voice, you can build unique phone call experiences with one API, to create, receive, control and monitor calls with just a few lines of code. Create an engaging voice experience that you can quickly scale and modify with a wide array of customization options and resources.
Language Tutor is a tool, useful in learning and memorizing new word in a foreign language. It supports up to 6 languages simultaneously, uses flash cards and other exercises or games and may be used as a quiz tool. It works on Palm or Windows.