Similar Technologies

While we think that JSON Schema has a unique value proposition, we'd like to provide visibility to other technologies that share similar goals:

• JSON Constraint Rules (JCR): JCR aims to provide a more expressive way to define constraints on JSON data compared to JSON Schema. While still under development, you can learn more about it on GitHub: http://codalogic.github.io/jcr/.

• CBOR Constrained Data Description Language (CBL): Similar to JCR, CBL focuses on describing constraints, but specifically for the CBOR data format. Dive deeper into CBL in the CBL IETF draft: https://datatracker.ietf.org/doc/draft-cordell-jcr-co-constraints/.

• CBOR Data Definition Language (Cddl): While not strictly focused on constraints, Cddl allows defining the structure of CBOR data. Check out the Cddl IETF draft: https://tools.ietf.org/html/draft-greevenbosch-appsawg-cbor-cddl-08 for more information.

• • Okyline: a declarative, example-driven language that expresses both the structure and the cross-field business invariants of JSON data in a single contract, with built-in versioning and cross-schema composition. Open specification, CC BY-SA 4.0: https://github.com/Okyline/okyline-spec.

Contributing to the Community

Do you know of any other relevant technologies that we should add to this list? Please submit a pull request. We encourage contributions!