fastapi / fastapi

FastAPI framework, high performance, easy to learn, fast to code, ready for production

pydantic / pydantic

Data validation using Python type hints

fastapi / sqlmodel

SQL databases in Python, designed for simplicity, compatibility, and robustness.

rjsf-team / react-jsonschema-form

A React component for building Web forms from JSON Schema.

glideapps / quicktype

Generate types and converters from JSON, Schema, and GraphQL

samchon / typia

Super-fast/easy runtime validators and serializers via transformation

microsoft / typespec

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json-schema-org / json-schema-spec

The JSON Schema specification

mangiucugna / json_repair

Repair malformed JSON from LLMs, APIs, logs, and user input in Python.

python-jsonschema / jsonschema

An implementation of the JSON Schema specification for Python

json-editor / json-editor

JSON Schema Based Editor

danielgtaylor / huma

Huma REST/HTTP API Framework for Golang with OpenAPI 3.1

msgspec / msgspec

A fast serialization and validation library, with builtin support for JSON, MessagePack, YAML, and TOML

datamodel-code-generator / datamodel-code-generator

Generate Pydantic v2 models, dataclasses, TypedDict, and msgspec.Struct from OpenAPI, JSON Schema, GraphQL, Avro, Protobuf, and raw JSON/YAML/CSV.

jsonrainbow / json-schema

JSON Schema for PHP

stoplightio / spectral

A flexible JSON/YAML linter for creating automated style guides, with baked in support for OpenAPI (v3.1, v3.0, and v2.0), Arazzo v1.0, as well as AsyncAPI v2.x.

stephenberry / glaze

Extremely fast, in memory, serialization, reflection, and RPC library for C++. JSON, BEVE, BSON, CBOR, CSV, JSONB, MessagePack, TOML, YAML, EETF

ngx-formly / ngx-formly

📝 JSON powered / Dynamic forms for Angular

tiangolo / uvicorn-gunicorn-fastapi-docker

Docker image with Uvicorn managed by Gunicorn for high-performance FastAPI web applications in Python with performance auto-tuning.

eclipsesource / jsonforms

Customizable JSON Schema-based forms with React, Angular and Vue support out of the box.

confluentinc / schema-registry

Confluent Schema Registry for Kafka

AhmadHassan-BTed / Jantt

The AI-native JSON Gantt chart engine. Dependency-free interactive timelines with React, script-tag, CLI, topological DAG solver, and formal JSON schema.

withcatai / node-llama-cpp

Run AI models locally on your machine with node.js bindings for llama.cpp. Enforce a JSON schema on the model output on the generation level

metosin / malli

High-performance data-driven data specification library for Clojure/Script.

vega / ts-json-schema-generator

Generate JSON schema from your Typescript sources

voxpupuli / json-schema

Ruby JSON Schema Validator

GREsau / schemars

Generate JSON Schema documents from Rust code

rest-sh / restish

Restish is a CLI for interacting with REST-ish HTTP APIs with some nice features built-in

sindresorhus / conf

Simple config handling for your app or module

santhosh-tekuri / jsonschema

JSONSchema (draft 2020-12, draft 2019-09, draft-7, draft-6, draft-4) Validation using Go

json-everything / json-everything

System.Text.Json-based support for all of your JSON needs.

RhythmicWave / NovelForge

AI辅助长篇小说创作，卡片式创作，支持基于 JSON Schema的结构化 AI 生成与上下文引用，可扩展性强。

marshmallow-code / apispec

A pluggable API specification generator. Currently supports the OpenAPI Specification (f.k.a. the Swagger specification)..

APIDevTools / swagger-parser

Swagger 2.0 and OpenAPI 3.0 parser/validator

daveshanley / vacuum

vacuum is the worlds fastest and most versatile OpenAPI, Arazzo, AsyncAPI & JSON Schema linter, docs generator and toolkit. It tears through API specs at light speed. 100% compatible with Spectral rulesets, and OpenAPI 3.0, 3.1 and 3.2

APIDevTools / json-schema-ref-parser

Parse, Resolve, and Dereference JSON Schema $ref pointers in Node and browsers

networknt / json-schema-validator

A fast Java JSON schema validator that supports draft V4, V6, V7, V2019-09 and V2020-12

b0o / SchemaStore.nvim

🛍 JSON schemas for Neovim

Fatal1ty / mashumaro

High-performance serialization without replacing your data model

cernopendata / opendata.cern.ch

Source code for the CERN Open Data portal

omissis / go-jsonschema

A tool to generate Go data types from JSON Schema definitions.

json-schema-org / JSON-Schema-Test-Suite

A language agnostic test suite for the JSON Schema specifications

coveooss / json-schema-for-humans

Quickly generate HTML documentation from a JSON schema

adobe / jsonschema2md

Convert Complex JSON Schemas into Markdown Documentation

ardatan / feTS

🗹 TypeScript HTTP Framework focusing on e2e type-safety, easy setup, performance & great developer experience

janephp / janephp

:seedling: Jane is a set of libraries to generate Models & API Clients based on JSON Schema / OpenAPI specs

taocpp / json

C++ header-only JSON library

linkml / linkml

Linked Open Data Modeling Language

pboettch / json-schema-validator

JSON schema validator for JSON for Modern C++

koumoul-dev / vuetify-jsonschema-form

Create beautiful and low-effort forms that output valid data. Published on npm as @koumoul/vjsf.

airtasker / spot

Spot is a concise, developer-friendly way to describe your API contract.

fastify / fluent-json-schema

A fluent API to generate JSON schemas

To3akaRin / VLMForge

Evaluate visual models on your own images, JSON Schema, and production constraints with LangGraph, Pareto analysis, and a no-key Replay demo.

dave-137 / quantum-experiments

Personal quantum-computing experiments with Cirq and Mitiq.

Sega757 / meta-core

Deterministic telemetry & control plane for multi-agent AI systems. Atomic POSIX JSONL event bus, W3C/OpenTelemetry DAG reconstruction, and circular handoff guardrails.

m42703144-afk / rojo-schema-forge

Best Rojo JSON Schema for Roblox Autocomplete 2026

mailschema / mailschema

Mail Action Protocol, shared types and Registry for agents and services working through email.

YuniqueUnic / a2ui-ask

Interactive UI for AI agents — turn structured questions into browser forms.

tooladda-online / json-to-typescript

JSON to TypeScript Generator — Paste, upload, or drag & drop JSON and get clean, production-ready TypeScript interfaces, types, classes, and enums instantly — with deep nested object/array support, smart optional and nullable field detection, union types, and Free on ToolAdda.online.