Redmine

I was not clear enough. I meant "When I enter the profile of another user to see the issues that are assigned to him/her." -- if the permissions allow such action.

What's the added value in comparison with using a report query with "assigned to" filter set to this user ?

On the page of a user, one can see total number of the issues he/she has published, the overall user's activity, the list of the projects he/she participate in, common information (name, e-mail, when he/she is registered and when he/she has logged last time). This is ok.

I think, that it will not be redundant to see the active tasks that are assigned to the user and the tasks that he/she is author of. These lists may be too large and thus unpractical to be rendered on the page. Instead, two links are quite enough: "Active assigned tasks" and "Active tasks of this user" (the latter is even more important).