I'm happy to announce a new project, called Netzschleuder: https://networks.skewed.de
This is a network data catalogue and repository. It currently contains 257 datasets totaling 3,916 individual networks (94,956 if you include a big @firstname.lastname@example.org trove).
The social network of the future: No ads, no corporate surveillance, ethical design, and decentralization! Own your data with Mastodon!