No GitHub for Atom videos yet. You could help us improve this page by suggesting one.
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
Commit Together by Github - Now add co-authors to your commits
Google Drive - Access and sync your files anywhere
Refined GitHub - Browser extension that makes GitHub cleaner & more powerful
Mega - Secure File Storage and collaboration
GitKraken Glo Boards - Easily track tasks and issues from inside popular dev tools