Scriba is a great tool to learn Latin. It features :
- Lewis and Short's Latin-English dictionary
(5 000 entries in the free version, more than 50 000 in the full version, through paid add-on)
- declensions and conjugations of all the entries
- a Latin word parser
- an English-Latin lexicon (free version)
- Smith & Hall's English-Latin Dictionary (paid version)
- Allen & Greenough's New Latin Grammar
- a Document reader which allows you to look up words in the database
- Flashcards to learn new words