Cased Dimensions are one of the Companies in the market, that creates valuable add-ons for Service Manager.

Recently they published a series of videos, that demonstrates their different solutions capabilities.

I would recommend you to have a look at one or more of these videos, to learn what they have to offer:

http://www.caseddimensions.com/scsm_self_service_portal/

http://www.caseddimensions.com/scsm_workflow_optimizer/

http://www.caseddimensions.com/scsm_assigned_to_me/

http://www.caseddimensions.com/scsm_sla_management/

http://www.caseddimensions.com/scsm_list_to_assignee/

http://www.caseddimensions.com/scsm_asset_management/

http://www.caseddimensions.com/scsm_force_list_selection/

http://www.caseddimensions.com/scsm_mandatory_fields/

http://www.caseddimensions.com/scsm_auto_assignment/

http://www.caseddimensions.com/scsm_enterprise_change/

http://www.caseddimensions.com/scsm_advanced_views/

http://www.caseddimensions.com/scsm_related_items/

http://www.caseddimensions.com/scsm_request_user_input/

http://www.caseddimensions.com/scsm_advanced_reporting/

http://www.caseddimensions.com/scsm_decision_activity/

http://www.caseddimensions.com/scsm_auto_closure/

http://www.caseddimensions.com/scsm_stop_the_clock/