Desktop applications generally fall into this category. A collaborative system is designed to support multiple users modifying different sections of the plan at once, for example, updating the areas they personally are responsible for such that those estimates get integrated into the overall plan. Web-based tools, including extranets, generally fall into this category, but have the limitation that they can only be used when the user has live Internet access.
An integrated system combines project management or project planning, with many other aspects of company life. For example, projects can have bug tracking issues assigned to each project, the list of project customers becomes a customer relationship management module, and each person on the project plan has their own task lists, calendars, and messaging functionality associated with their projects.Similarly, specialized tools like Source 0Forge integrate project management software with source control (CVS) software and bug-tracking software, so that each piece of information can be integrated into the same system.
