Voyant Tools – Reader
Reader provides a viewing window to allow the user to read the full text of the corpus that they have imported into Voyant Tools. Corpus reader provides a panel of coloured bars along the left of the screen. These bars serve important roles in providing information about the texts and facilitating navigation through the corpus. Each of these bars represents a segment of text within the corpus, and the document they belong to is indicated by the colour of the bar. Hovering over any of the bars will indicate the title of the document that it belongs to. Clicking on any of the bars allows the user to jump to that segment of text. The current segment of the text that is displayed is demonstrated by a pulsing red rectangle surrounding a bar.
http://docs.voyant-tools.org/tools/reader/