Good sources of open/free datasets?

Memgraph is a streaming graph application platform that helps you wrangle your streaming data, build sophisticated models that you can query in real-time.[1] We have dozens of datasets that we have are showcasing on our site or in our app [2], [3], and [4].

We would like to build our models, datasets, and apps around real life examples and data.

Do you know and good sources like the one from Jure Leskovac [5]?

[1] https://memgraph.com/

[2] https://news.ycombinator.com/item?id=31395478

[3] https://memgraph.com/blog/gas-pipelines-in-europe

[4] https://playground.memgraph.com/

[5] https://snap.stanford.edu/data/