I have been using BoxCryptor since it was first released and it has only gotten better. One thing I like about it is the install gives you the option of creating a portable version. This way I can keep my data safe and secure and if I need to decrypt anything on another system I just use the portable version. Another good aspect of the program is that it mounts the data in a drive letter and when I back up my system the data stored in the cloud folder is still encrypted.