Top JSON GitHub Repositories & Tools (2026)

Get your documents ready for gen AI

JSON.parse with hard limits on nesting depth, key count, string length and input size. Refuses parser bombs before they are allocated.

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

A declarative, simple, fast, and fun package for building command line tools in Go

The most popular Kubernetes Operator for PostgreSQL.

Widelands is a free, open source real-time strategy game with singleplayer campaigns and a multiplayer mode. The game was inspired by Settlers II™ (© Bluebyte) but has significantly more variety and depth to it.

A jq clone focussed on correctness, speed, and simplicity

JSON-native TypeScript ORM for Bun, Browsers, Edge, Deno, Node, Workers

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

🍬A set of tools that keep Java sweet.

Redisson: Valkey & Redis Java Client and Real-Time Data Platform. Sync/Async/RxJava/Reactive API. Over 50 Valkey and Redis based Java objects and services: Set, Multimap, SortedSet, Map, List, Queue, Deque, Semaphore, Lock, AtomicLong, Map Reduce, Bloom filter, Spring, Tomcat, Scheduler, JCache API, Hibernate, RPC, local cache..

Declarative Continuous Deployment for Kubernetes

Morocco's 1,503 communes as open data: HCP codes, the 2024 and 2014 censuses, boundaries, an HTTP API and an MCP server.

Open Policy Agent (OPA) is an open source, general-purpose policy engine.

Interactive Tables and Data Grids for JavaScript

A tool for mocking HTTP services

Super-fast/easy runtime validators and serializers via transformation

jQuery Form Plugin

General data-binding package for Jackson: works on streaming API (core) implementation(s)

A ruby implementation of the RFC 7519 OAuth JSON Web Token (JWT) standard.