You do not need local LaTeX environment anymore. If you have an account for Cloud LaTeX, you can use LaTeX in anywhere and at any time.
Cloud LaTeX is the first online LaTeX application compatible with multibyte languages such as Japanese, Korean and Chinese. You can write documents with pLaTeX / XeLaTeX / upLaTeX / LuaLaTeX.
Your documents and files are stored as encrypted data by AES256 and transfered via SSL protocol.