Text to Voice or Text to Speech is one of the coolest add-on for Firefox. It gives your browser the power of speech. Select text, click the button on the bottom right and this add-on speaks the selected text for you. Isn't it brilliant? Easily convert text to speech when using Firefox.

You can even download what you just heard. In other words, you will be able to download an audio file in MP3 format from the same page. Right click on download mp3 link, select save link as, select location on your computer and it downloads the mp3 audio file there.

The license of this software is Freeware, you can free download and free use this browser plug-ins software.