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.
UkeySoft USB Encryption - Password Protect Lock your USB Disk, flash drive, memory stick
Dropbox - Online Sync and File Sharing
Cryptomator - When it comes to saving your files on a cloud server, it is important to ensure the security of those files. Keeping your delicate files out of the wrong hands can save you a lot of time and hassle. Read more about Cryptomator.
Google Drive - Access and sync your files anywhere
Axcrypt - AxCrypt - Password Protect Files With Strong Encryption. AxCrypt is the leading open source file encryption software for Windows.
Mega - Secure File Storage and collaboration