LINK

LTC is a free program for building linguistic syntax trees from text. The user points and clicks their way to a syntactic analysis. LTC is intended for quickly producing syntactic analyses of large amounts of text (think 100,000-200,000 words, or more). The program does no analysis on its own. The user is completely free to draw the tree however he or she wishes. However, the program makes sure that the tree is a tree and not some other kind of graph.