MIDDLE-EARTH TIMELINE
Parf Edhellen, Elvish Book in Sindarin, is a collaborative dictionary of Tolkien's languages, open source and free since 2011 and maintained by a fan known as Aldaleon. It gathers words from Quenya, Sindarin, Telerin and the other tongues of Arda, each with its source, publication and the history of the entry, alongside reconstructed words made by the linguistic community according to Tolkien's own rules.
Type a word in English or in Elvish and see what it means and where it comes from: a simple way into Tolkien's languages, with the scholarly sources kept in view.
A free, open source dictionary of Tolkien's Elvish languages, with sources for every word.