For hosting common files it's ok. Also it is on Android too do, great to transfer files between your Windows and your phone. But if you want better security you have to subscribe a monthly offer.
File Encryption XP - A program designed for protecting confidential information stored on your computer.
Dropbox - Online Sync and File Sharing
S.S.E. File Encryptor - S.S.E. File Encryptor is a cross-platform encrypter/decrypter of files and folders.
Google Drive - Access and sync your files anywhere
CrococryptFile - Strong file encryption tool
Mega - Secure File Storage and collaboration