ctk

seems like the trello developers only want to improve their business deal. we needed a trello calendar for all cards across all boards so urgently that we created it ourselves... (i hope its ok to spam the link since its open source)

http://calendar-for-trello.com/#/month

https://github.com/w11k/calendar-for-trello

if restyboard implements a native feature for that we'll try it out!