GMail

Definition:

GMail is Google's free, web-based email. GMail is unique in that you do not need to install any software to use it. Rather, you just need an Internet connection and a web browser. Some features of GMail not found in other email software packages include the ability to tag email and the displaying of multiple back and forth emails with the same subject as a conversation. GMail also touts one of the largest storage capacities of any of the web-based email providers.

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iTunes

iTunes is an application created by Apple. Using iTunes you can listen to music and watch videos both on your computer and on CDs. It also allows you to legally purchase and download digital music, movies, and television episodes as well as transfer music to and from an iPod and subscribe to podcasts.