OpenProj is a totally free and safe application you will find very useful at the time of preparing and organizing your schedules. It's compatible with Microsoft and Primavera format files. You can create Gantt charts, diagrams, and much more.
This application is open source based and the solution for you. It contains features that allow you to print and preview several schedules at the same time.
It's a multiuser application that can be used by you or your employees. Download it now and prepared to be amazed, you will never forget about an activity, this program is the assistant you need to remind you of your tasks.