Apps similar to Simfinity.js include Hasura, which is open source and free for personal use. Other options are PostGraphile. Between them they cover Linux, the web and self-hosting.
Hasura makes data access easy, by instantly composing a GraphQL API that is backed by databases and services so that the developer team (or API consumers) get immediately productive. The nature of GraphQL itself and Hasura’s dynamic approach makes integration and iteration easy.
GraphQL API for Postgres Builds and serves a client-facing GraphQL API by inspecting your existing database (tables, columns, relations, views, procedures and more). No GraphQL coding necessary!.
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