GANTTzilla - Online MPP, MPX, Planner documents viewer with publishing, sharing and versioning support.
Microsoft Project - Microsoft Office Project gives you robust project management tools with the right blend of...
GanttProject - Project scheduling and management tool
Smartsheet - Smartsheet is an intuitive online project management tool enabling teams to increase productivity using cloud, collaboration, & mobile technologies.
Asana - Asana project management is an effort to re-imagine how we work together, through modern productivity software. Fast and versatile, Asana helps individuals and groups get more done.
Bitrix24 - Bitrix24 is a free (for small businesses) social enterprise platform. It is a united work space which handles the many aspects of daily operations and tasks. Create your own social intranet in minutes!