One of our clients providing power expertise in rail, was after advice for what project management tools to use.  The project in this environment is a long lived and highly uncertain entity.  Its projections exist for a long time before the sale.  Ability to forecast resource consumptions is crucial   The client currently prepares a portfolio report in excel from various informal systems to run both sales and operations review meetings. The client has a preference for Oracle Applications, although was unaware of the flavours of project management solutions within Oracle's portfolio.  There are already some Oracle Applications within the group. We provided a survey of Oracle and non Oracle solutions and tried to highlight where the heritage and strengths of each candidate lay.   I am only discussing applications that I have some awareness of.  There are obviously many others. 

A free to use and extend project management application that used to be an example application in Apex.  A surprisingly competent application.   Good portfolio level reporting and good status gathering.  Any integrations would have to be built by the client.   You can still get hold of it from people that archived it.

Came out of managing professional services projects.  Very good integration with project costing, project accounting and purchasing.  

The Fusion Project Management applications owe most of their heritage to the e-Business Suite, so share the same strengths and priorities.   Fusion spent lots of central design effort in usability "away from your desk". 

Came out of managing oil and gas projects. Very good integration with capital assets.  Very good integration with accounting and procurement as projects utilizes some core accounting entities. Interestingly, also good with stage payments. 

Oracle acquired Primavera as a specialist in project management, and left the management of the company as a Global Business Unit.  It did not fold the management under existing project management solutions that were part of a bigger suite.  The thinking, I presume, was to keep the focus on projects.  Primavera was very big in construction. 

Microsoft Project is to the project manager what the hand axe was to our prehistoric ancestors.   (Single survival tool you had to have)  It is centered on the Critical Path Method approach to project management.  However, it is strongest in the single project viewpoint, and this client is really focused on the portfolio level; tracking and reporting. 

Monday.com seems to be very popular at the moment.  The style of project management is much more, agile, scrum board style, with horizontal communication between project members.  Again, the client's priorities are really at the portfolio level for running operations meetings of the senior management team. 

Axelor is an Open Source ERP solution that has come across my path recently.  At a guess, I would say that their projects solution has heritage in software projects.  It seems to have a good array of tools for the project team. 

Project Libre  is another open source solution, but is aimed solidly in the Microsoft Project space, with many of the same capabilities but also some of the drawbacks of the single project, critical path method view of project management.