[iamlucaswolf]

Umbra was recently spun out as CedarDB [1].

And Hyper is alive and well at Salesforce/Tableau! The team working on it is still in large parts the original Hyper team from TUM. You can actually download Hyper (as a binary with language bindings) and play around with it [2] for non-commercial use cases.

If you think Hyper/Umbra is cool, the TUM database group has lots of other very interesting projects going on at the moment. LingoDB [3] pushes the database-as-a-compiler idea to the extreme by implementing query optimization and compilation query compilation in MLIR. LingoDB is open-source. Also Viktor Leis, who stands behind (among many other things) Hyper's Morsel scheduling and ART indexes as well as Umbra's buffer management recently started a very interesting project [4] to heavily co-design the DBMS together with the OS in a unikernel approach. Really interesting stuff!

Disclaimer: I work on Hyper. Views are my own.

[1]: https://cedardb.com/ [2]: https://tableau.github.io/hyper-db/docs/ [3]: https://www.lingo-db.com/ [4]: https://www.cs.cit.tum.de/dis/research/cumulus/