Disroot is based in the Netherlands and claims that they don't track users or use their data for any purpose. They believe in open and federated software that respect freedom and privacy.
Autistici is based in Italy and also claims not to sell your personal data. They manually verify every user registration. Autistici believes everyone has a right to free communication, and their website states that they are anti-fascism, anti-racism, anti-sexism, anti-homophobia, anti-transphobia, and anti-militarism, and that you can only use their services if you agree with those principles. They also offer other services, like blogs and web hosting.