Obviously, project management tools are generally designed to enchance the workflow of a particular business. Bearing this in mind a good manager can minimize expenditures, save much time and effort. However the success of this undertaking would depend on the manager in the first place. Choosing a suitable service that would suit the needs of your business is half the battle. Moreover, is not a project management tool's responsibility to encourage teamwork. The tool itself gives you and your team a wide range of opportunities and in case you manage to convey this idea to your colleagues and show them what your service is capable of, chances are that your team would get enough motivation for a better teamwork. We are using http://www.teamlab.com/ at our small software company. Once we introduced it into our business it was only a matter of time before we could actually see its effect on our teamwork. All you have to do is find the right software.