If building a list of alternatives, let me do a shameless plug for StackGres [1], the Postgres platform for Kubernetes with a fully featured Web Console, AMD64 and ARM64 support and more than a hundred available Postgres extensions [2]. Fully open source, no usage restrictions.

[1] https://stackgres.io/

[2] https://stackgres.io/extensions/

Disclaimer: founder of the project.

+1 for cnpg - I couldn't get any of the other operators to work well for me, but cnpg has been a blast.

Another great resources is https://operatorhub.io/ which lets you search by certain parameters; as well as https://dok.community/landscape/.

One clarification about CloudNativePG. It is not EDB's anymore (or EnterpriseDB if you prefer).

EDB is the original creator. The software is now entirely owned by a vendor neutral community, openly governed. We have applied for the CNCF sandbox and waiting for the approval at this stage.

Worth noting that the Crunchy operator is based on Patroni, which is maintained by Zalando.