A spec-compliant fork of https://github.com/CommunitySolidServer/CommunitySolidServer
Specifically, it has patches for solid-contrib/test-suite#145 and solid-contrib/test-suite#146.
The patches are not very well written but the main intend is to show how to make CSS pass the web-access-control-tests.
See SolidServers.org for more info on various Solid server implementations.