SQL is fifty years old and the ecosystem around it has never been more active. Distributed engines, query layers over object storage, SQL interfaces on non-relational systems, and a continuous supply of alternatives to the incumbent databases.
On the .org the open-source reading comes forward, and that’s where a great deal of the interesting work in this space actually happens. Several of the most significant database projects are foundation-governed open source, and that world uses this extension as standard.
The name fits an open-source database project, a standards or compatibility initiative, a community resource, a benchmarking project, or a technical publication. The compatibility angle is genuinely useful: SQL dialects differ in ways that cause real pain, and a neutral body documenting that would be valuable.
Six characters, no hyphen, immediately legible to the technical audience, and the .org signals community rather than vendor, which matters in infrastructure software.
The name is listed. Enquiries welcome.