3 ms·You're forgetting that they wrote the entire backend as a part of this.by nickysielicki 12y agoYou're forgetting that they wrote the entire backend as a part of this.bdcravens 12y agoQuickly reading through the code, it looks like the frontend is the bulk of the code. Which makes sense: Trello is really a pretty simple app; the UI experience is where the real magic is.bbcbasic 12y agoCould even be done as a couchapp.