Here's one not mentioned in the article (currently an experimental feature gated by a toggle): ClickHouse can consume a Postgres logical replication stream. Instead of paying for Stitch/Fivetran/etc, you can get OLTP->OLAP replication for free, with no additional software. It's not as flexible as the commercial stuff, and has several sharp edges, but still it's very useful and just an amazing thing to be built-in.
