Keep your knowledge in your home. Share some parts with friends and family as you like, and maybe publish some of it for all to see.
Solidbox is an alternative to putting trust in service providers. Instead you run internet services yourself - without technical challenges but similar to a fridge or a wifi box: Cheap and dead simple to use!
Under the hood, Solidbox runs one of the oldest and most serious operating systems, Debian GNU/Linux, and among the included services are both conventional things like Jabber chat and a simple web hosting, as well as a set of Solid services for efficient and flexible data sharing both with humans and with other similar systems. Solidbox is a Free software project developed as an integral part of Debian.