/sci/ - Soyence and Technology

help
Hi, guys I want project manager. Can anyone recommend something like a good project manager?

There are few things in demand

- I can use it for free and it isn't like a cloud service, instead purely program.
- There need to be tree hierarchies that can be implemented as well as excel tabs in it.and preferably it can something that has open code and can be edited to add new /change applications.because otherwise its unlikely i will find anything like that