I like that ProjectLibre is a free project management software that allows me to create project plans and Gantt charts.

This is an adequate substitute for Microsoft project. It’s very intuitive to use.

The free trial is two weeks long, and you get a feel for how efficient the software is and if it will work for you. It is multi-user and multi-project. This software features an open source desktop. Soon, ProjectLibre will also feature cloud project management.