Thank you for mentioning that. Yes.
There's also Glasklar Teknik AB and Karlstad Internet Privacy Lab AB.
Glasklar does:
- Sigsum, a transparency log design
- System Transparency, a security architecture for transparent systems
- Hosts and maintains the Debian Snapshot service, an archive of the past decade of released Debian packages
KIPL does traffic analysis defense against AI-based classifiers, which Mullvad recently integrated into the VPN app.