We use Datto RMM at our MSP. Definitely not open source or free. But it has what your are asking for and will keep up with your company as you grow, without needing to migrate to another platform in the future.
We use Datto RMM at our MSP. Definitely not open source or free. But it has what your are asking for and will keep up with your company as you grow, without needing to migrate to another platform in the future.