Do you know a planning or To DO app?

Hi everybody!

We are building an app for small and medium companies to help them to manage:

• employees: planning
• tasks: to do and reports you can attribute to other employees
• communication: encrypted messenger (signal protocol)

It will be free because we really want to help SMB's (and we can)

I want to take a look at our competitors, so do you know planning or to do apps?

Thanks!