With ProductPlan you have the ability to manage a project with a totally objective simplicity, it is enough to have a few tasks, organize them, assign the work team that will be performing the respective tasks, customize the route and that's it. ProductPlan is rich in features to get a good project management without having a great learning curve to be able to use this platform, big or small, whether it is very deep or with basic tasks.
If you have more than 2 developers this thing is basically a requirement within github to manage sprints if you use agile methodology. Why use a different website entirely when you can run your entire board right from github itself? I've tried other solutions but basing everything on github issues makes it so no duplicate work has to take place. If the UX quirks and mobile were fixed this would be 10/10 for me! If you're only one or two devs on a team it may be overkill to use, but if you're going to scale it's better to put the process in early.
Once it's up and running it's easy to use. It needs a little consideration to get set up perfectly for your own needs, but that is the same for any feature-rich software.
There are very few problems that we have had with this platform, but from the technical support it has solved everything immediately, from errors with the page to small questions of use. We have simply had a quick response without a hitch when needing help from the ProductPlan support team.
Support is good, but quite honestly, I haven't needed any support since 2015. As I remember, I was required to open a ticket and had to wait a few days for resolution. I give it a rating of 8 because of the lag in getting a solid resolution, but it was resolved adequately.
ProductPlan is a direct competitor to Aha!. Whereas JIRA and Trello are for mostly handling the operational tasks, ProductPlan and Aha! are for strategizing. ProductPlan is very well suited to give straight communication on what to achieve in the future and why. JIRA and Trello are the tools managing how to achieve those tasks.
I have used Workfront in the past, which in my experience, is best with a traditional waterfall methodology, similar to Microsoft Project and the other more traditional project management software projects. ZenHub is truly designed around the agile methodology. Other products that claim they are agile oriented seem to just be adjusting and tweaking their traditional product to include a few agile features.