* [Open Policy Agent v1.17.0](https://github.com/open-policy-agent/opa) – General-purpose policy engine for unified, context-aware policy enforcement across various systems.

* [Prisma Json Types Generator v5.1.0](https://github.com/arthurfiorette/prisma-json-types-generator) – Generates strict TypeScript types for Prisma Json and string fields by replacing JsonValue with custom types.

* [Dasel v3.11.0](https://github.com/TomWright/dasel) – Command-line tool and Go library for querying, modifying, and converting structured data across JSON, YAML, TOML, XML, CSV, HCL, and INI.

* [5e-database v5.8.0](https://github.com/5e-bits/5e-database) – Database supporting the D&D 5th Edition API.

* [trdsql v1.2.0](https://github.com/noborus/trdsql) – CLI that executes SQL queries on CSV, LTSV, JSON, YAML and TBLN files and outputs in various formats.

* [StoreModel v4.6.0](https://github.com/DmitryTsepelev/store_model) – Wrap JSON-backed database columns with ActiveModel-like classes.

* [fast-json-stringify v6.4.0](https://github.com/fastify/fast-json-stringify) – JSON Schema-based library generating faster stringify functions for small payloads.

* [EasyDB v2.9.0](https://github.com/shencangsheng/easydb_app) – Lightweight Tauri- and Rust-based desktop app for querying local CSV, Excel, JSON, NDJSON, and Parquet files using SQL without an external database.

* [Wretch 3.0.8](https://github.com/elbywan/wretch) – A small, intuitive, and type-safe fetch wrapper simplifying network requests and response handling.

* [oj gem v3.17.1](https://github.com/ohler55/oj) – Fast JSON parser and object marshaller for Ruby.

* [typescript-generator v4.1.1](https://github.com/vojtechhabarta/typescript-generator) – Generates TypeScript declaration files from Java classes using JSON mapping, suitable for REST service clients.

* [Concerto v4.1.0](https://github.com/accordproject/concerto) – Lightweight schema language and runtime for defining, validating, and serializing business data models.

* [Typia v12.1.1](https://github.com/samchon/typia) – Transformer library providing super-fast runtime validators, enhanced JSON schema, LLM schemas, protocol buffer support, and random data generation.

* [Tableau v0.16.0](https://github.com/tableauio/tableau) – Modern proto3-based configuration converter for Excel/CSV/XML/YAML to JSON/Text/Bin.

* [JSON v2.19.7](https://github.com/ruby/json) – Implementation of the JSON specification for Ruby.

* [jsoncolor v0.9.0](https://github.com/neilotoole/jsoncolor) – Colorizes and indents JSON output for Go command-line tools while remaining a drop-in replacement for the standard encoding/json API.

* [genshin-db v5.2.11](https://github.com/theBowja/genshin-db) – JSON data for Genshin Impact with flexible searching functions across various categories.

* [PII-Shield v2.0.1](https://github.com/pii-shield/pii-shield) – Zero-code Kubernetes sidecar that redacts PII from logs pre-egress using entropy analysis and deterministic hashing.

* [camaro v6.3.2](https://github.com/tuananh/camaro) – Node.js library that transforms XML into JSON using a pugixml-backed WebAssembly parser with XPath-based templates.

* [go-jsonschema v0.23.1](https://github.com/omissis/go-jsonschema) – Generates Go structs and unmarshalling code from JSON Schema definitions with validation.

* [MDN data v2.28.1](https://github.com/mdn/data) – General JSON data sets for Web technologies used in documentation and external tools.

* [Config v2.2.8](https://github.com/gookit/config) – Full-featured Go library for managing application configuration with multi-format and multi-source support.

* [Cities of the World 1.1.58](https://github.com/lutangar/cities.json) – JSON array of worldwide cities from GeoNames, including coordinates, country and admin codes, updated monthly.

* [jsonrepair v0.4.5](https://github.com/kaptinlin/jsonrepair) – High-performance Go library for repairing malformed JSON and normalizing common JSON issues, including output from LLMs.

* [Content Collections @content-collections...](https://github.com/sdorra/content-collections) – Transform content into type-safe data collections with built-in validation and preprocessing.

* [pretty-print-json v3.0.8](https://github.com/center-key/pretty-print-json) – Library to format JSON data into indented and colorized HTML.

* [Flatito v0.1.5](https://github.com/ceritium/flatito) – Grep-like tool for YAML and JSON that reveals matching keys, values, and their line numbers.

* [Keystatic @keystatic/templates...](https://github.com/Thinkmill/keystatic) – First-class CMS experience with a TypeScript API, Markdown/YAML/JSON content and Git-backed storage without a database.

* [Sury v11.0.0-alpha.7](https://github.com/DZakh/sury) – Fast, modular schema validation and parsing library with JSON Schema support and TypeScript, JavaScript, and ReScript compatibility.