In the Experiment Browser experiments can be viewed in the tree structure. To view all the experiments you created in one overview go to the Experiment List. If you change the filter to one of the collaborators, you can see all the experiments you are assigned to as the collaborator. Here you can filter experiments on Collaborators, Projects, Studies, Status, Due date or use the search option.
When you have the permission to View Others Experiments there an option to check the Admin Mode. When the admin mode is active, you can view all the experiments of all users.