Off the top of my head: - Vortex https://github.com/vortex-data/vortex https://github.com/vortex-data/vortex - Lance https://github.com/lancedb/lance https://

Off the top of my head: - Vortex https://github.com/vortex-data/vortex https://github.com/vortex-data/vortex - Lance https://github.com/lancedb/lance https://github.com/lancedb/lance - Nimble https://github.com/facebookincubator/nimble https://github.com/facebookincubator/nimble There are also a bunch of ideas coming out of academia, but I don't know how many of them have a sustained effort behind them and not just a couple of papers