Google Drive - Access and sync your files anywhere
Kissflow - Kissflow is a workflow tool & business process workflow management software to automate your workflow process. Rated #1 cloud workflow software in Google Apps Marketplace.
ShareFile - Secure file sharing and sync
Process Street - Create beautiful rich process documents in a simple to follow checklist format. Fast, free and incredibly simple to use.
Dropbox - Online Sync and File Sharing
Pipefy - Pipefy is a process management software that empowers anyone to create and automate efficient workflows on their own without code.