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.
KiddoPaint - MS Paint in your browser (with emojis 💃😽🎨)
Dropbox - Online Sync and File Sharing
GIF Paint - Like MSPaint… for GIFs.
Google Drive - Access and sync your files anywhere
JS Paint - JSPaint is a web-based Microsoft Paint remake
Mega - Secure File Storage and collaboration