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.
Dropbox - Online Sync and File Sharing
Picross puzzle generator - Picross game and puzzle generator implemented in JavaScript.
Google Drive - Access and sync your files anywhere
Ordinary Puzzles - A minimalistic puzzle game inspired by Picross and Sudoku.
Mega - Secure File Storage and collaboration
Hungry Cat Picross - Join the adorable Hungry Cat on a vibrant Picross puzzle journey.