Libraries and Archives from Below:
Archive of GDR Opposition (adjacent to the Umweltbibliothek)
https://www.havemann-gesellschaft.de/archiv-der-ddr-opposition/startseite/
Agit (Berlin). Working with historical materials from left and social movements
https://aaagit.org/
Papiertiger
Archive and library of social movements (Berlin)
https://archiv-papiertiger.de/index.php
A Library for old and new Berliners
https://asylothekberlin.wordpress.com/
CITTIPUNKT Library (Berlin)
https://cryptpad.fr/pad/#/3/pad/view/90b4a4071a2954e0520146fd02cb0d95/embed/
Archive of Youth Culture
https://www.jugendkulturen.de/
Anarchist Library
https://bibliothekderfreien.de/
Archive and library of social movements (London)
https://archive.leftove.rs/about
https://maydayrooms.org/
Libraries and Archives on Libraries and Archives:
Dynamic Order at the Stiftung Sitterwerk (Library)
https://www.sitterwerk.ch/de/Dynamische-Ordnung
Nonlinear ordering with the Zettelkasten (by Niklas Luhmann)
Or an early analog data base
https://niklas-luhmann-archiv.de/nachlass/zettelkasten
Philip Messner, Recherche & Archive
Blog of an Archivist
https://isotype.ch/about/
Library about publishing practice, recursive publicity & the investment into the opposite
https://distro.info-space.ch/
Feminist Library
https://feministresearch.org/
Archive that explores the relationship between cultural production and social movements
https://interferencearchive.org/