This Chrome browser extension provides support for activating links and other HTML elements using voice commands.
Click by Voice numbers each clickable or focusable item at all times and allows activating them via keyboard. For example, to open a link numbered 13 in a new window, you could manually hit control shift space then type "13:w" into the resulting pop-up then hit enter. In practice, a voice command like "window pick 1 3" would be used to type these keys.
WARNING: this extension by itself provides no voice functionality; procurement of the needed voice commands is the user's responsibility. One recommended means of doing this is to use Vocola (http://vocola.net/).
Supported functionality includes focusing input elements, clicking elements, opening links in the same tab/a new (focused) tab/a new window, and removing the keyboard focus from the current element. For how to use Click by Voice, see https://github.com/mdbridge/click-by-voice/blob/master/README.md. CbV provides functionality similar to that of Firefox's mouseless browsing extension for voice control.