Syncthing, your local cloud!
Learn how to use Syncthing to create a local cloud
Get your files off the cloud, and use Syncthing to share files among your machines without relying on the cloud.
Syncthing is a file synchronization program that can synchronize files between two or more computers without the need for the cloud. Just have both computers on the same network and they can share files between each other.
It is easy to setup and use, and has versions available for all major desktop and server operating systems. It also has support from third party applications on android and iphone.
You can get started with it by following their Guide.