Furthermore, a collaborative editor is designed, that enables the collaborative editing of text and provides collaborative features like chatting or inviting other users to work collaboratively on the same document. It follows the principles of the realtime architecture, which is presented in this Thesis. It is shown, that this architecture is a good ﬁt for enabling realtime collaboration. In addition, this design is implemented prototypically with technologies like Ember.js, Node.js, socket.io and share.js. At last, this Thesis describes approaches to enhance the collaboration to rich text and arbitrary models.