We just published our new open source ticketing and customer service system.
Commercial page: https://zammad.com/
Source: https://github.com/zammad/zammad
Org page: https://zammad.org/
Foundation page: http://zammad-foundation.org/
Background: The founder and creator of the OTRS ticket system build an open source Zendesk alternative with some pretty neat features which can be found here: http://days.zammad.org/
Can't wait to read your feedback and what you think.
