I would recommend that engineers look to try Django Waffle for feature development within a team setting; it really streamlines flipping features on and off for testing. I think the simplicity of Django Waffle is pretty great, but it may be a limitation for those developing far more complex products.
If you do web programming, code integration with your remote team, and/or software development that requires real-time monitoring of development progress, monday dev is an excellent tool for this. Like its base platform, Monday.com, monday dev is developed and attempts to integrate into a very "new era" organizational system of digital whiteboards, only now focused more on productivity and helping developers to be comfortable in remote work.
While monday dev is an excellent ally to organize and work in harmony with your team, there are still certain important aspects that need to be improved. They are minor, but if corrected, they will help improve the user experience when using it.
I found Django Waffle to work seamlessly with my Django-native codebase, and the implementation was extremely fast and intuitive. Gargoyle offers a bit more in the way of building more complicated code segments, but it's also more complex to implement. I use Django Waffle for nearly every project involving feature flipping.
Monday is better than Jobber, as it gives you a place to see where all the jobs are and what the current status is. Everyone in the company can go to and see that view. It's not dependent on the status of the employee. Excel is much more technical and requires much more work to set up.