Lurking behind this bland title is a website almost–almost!–as good as LingQ. Lee Butterman, the site’s creator, links together Latin content with William Whitaker’s Words (an online Latin-English dictionary).
In the words of a review by Laura Gibbs, “This is a Latin dictionary look-up tool which generates an interlinear word list for you to look at as you read.” However, a description in words cannot do the site justice.
If you are interested, check it out yourself: http://www.nodictionaries.com/
Titles include Caesar’s Gallic War and Virgil’s Aeneid. There are also works by Seneca, Nepos, Cicero, Tacitus, Suetonius and others.
Here is Gibbs’ useful review and overview: Bestiaria Latina Blog: NoDictionaries.com
One drawback: the user needs to understand English because Whitaker’s definitions are in English only.