Foxit pdf reader is worth it if you're careful not to let the aggressive adware in alongside. It's much faster than Adobe's reader and allows you to type real notes that show on the page. The virus-spyware-adware arms race and the money you have to spend keeping it at bay have turned me off a bit regarding computer land. It's gotten steadily worse over the years. Really, given that biological viruses evolved naturally, using the term "virus" for the computer equivalent is a misnomer. There's a criminal mind behind each one.
FTP Manager Lite is one of the best free FTP and SFTP client software. The clean interface is super easy to use. It will perform your files transfers quickly and efficiently. It also supports FXP for superfast server to server transfers. It is perfect for backups or synchronizing servers.