CKEditor - Real-time collaborative future-ready rich text editor
Dropbox - Online Sync and File Sharing
Summernote - Summernote is a JavaScript library that helps users create WYSIWYG editors online.
ownCloud - ownCloud is an open source project enabling businesses to host their own cloud storage while maintaining regulatory and compliance needs.
Froala Editor - Froala Editor is a WYSIWYG HTML editor that enables rich text editing capabilities for the applications.
Box - Box offers secure content management and collaboration for individuals, teams and businesses, enabling secure file sharing and access to your files online.