Wrike is the Project Management tool that we use at Vilocity to manage all projects. The online system allows users to create projects, tasks, and calendars and collaborate with each team member so writing, designing, developing, questions, and anything else can be in one central location.
This tool is very useful because if any team members or PMs need to be switched out there is no lag in getting the person up to speed because all the information is in one place. A clear list of who is assigned to the project the due date and current status can be seen (see example below of Dental & Vision email marketing).
After projects are completed we archive the tasks and will always be able to refer back to it in case we need to revisit. Below is a link to the current working site to see collaboration among staff to get a project completed.