What is the best support for Scrum in Redmine?
All plugins I've tried are either not that active anymore and/or not up to the task of managing a major project using Scrum.
I've googled to no avail...
Scrum best practice is to avoid using too many tools.
Agile methods put individuals and interactions first. Tools aren't important. Read this page to see what the real background of scrum is: http://agilemanifesto.org/
Read this to see more about Scrum. http://www.controlchaos.com/old-site/Scrumo.htm
Note that tools aren't really necessary.
Scrum is a series of sprints (managed with a simple backlog and burndown chart).
Scrum is a daily stand-up meeting (managed with no tools at all).