LiquidPlanner

The product is well designed so that it is a relatively low bar to learn how to use it effectively. It is easy for team members to interact with the software and to enter the information according to each users project role. When used as intended, the software does an excellent job providing the necessary views into project status. The software definitely lives up to its name as modifying project plans and priorities is easy and the impacts of such changes are essentially instantly available. The numerous but intuitive ways to manage project subtleties such as available time, delays, etc. make it straightforward to create realistic project schedules.

I do not have any specific negatives with respect to Liquid Planner. Like any software of this class, It does take some training and experience to get the most out of it. My best advice is to spend some time to understand how the designers intended the product to be used use it accordingly. LP has a rich set of features and if used properly will contribute positively to project management.

It allows for multi-platform communication between teams that are separated by distance and also time. Since project statuses are sent to email, I can respond through my email back to the software to offer updates and answers when I am away from my desk.
The drag and drop capability of including word, spreadsheeet and pdf files allows for information to be posted to the project entry allowing us to maintain project oversight at all times.

It can be complicated to new users. The interface isn't immediately clear for helping a new user understand what the product can offer. While I can respond to a email sent to me from the software, I cannot email the project directly for status updates.