Json GitHub Repositories (2026) · Open Source Tools

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

PDF Parser for AI-ready data. Automate PDF accessibility. Open-source.

JSON for Modern C++

Parsing gigabytes of JSON per second : used by Facebook/Meta Velox, the Node.js runtime, ClickHouse, WatermelonDB, Apache Doris, Milvus, StarRocks

MariaDB server is a community developed fork of MySQL server. Started by core members of the original MySQL team, MariaDB actively works with outside developers to deliver the most featureful, stable, and sanely licensed open SQL server in the industry.

A jq clone focussed on correctness, speed, and simplicity

Super-fast/easy runtime validators and serializers via transformation

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

A toolchain for web projects, aimed to provide functionalities to maintain them. Biome offers formatter and linter, usable via CLI and LSP.

A configuration as code language with rich validation and tooling.

Declarative dynamic forms engine. Define dynamic forms with a typed TypeScript builder or as JSON, then render them in React, Angular, Vue, Lit, or vanilla JS. Includes validation, SSR, i18n, accessibility, theming, and an MCP server for AI assistants.

HCL is the HashiCorp configuration language.

Interactive Tables and Data Grids for JavaScript

Real-time messaging library for Go. The simplest way to add feature-rich and scalable WebSocket support to your application. The core of Centrifugo server.

A modern C++17/C++20 glTF 2.0 library focused on speed, correctness, and usability

JSON Schema validator that compiles to plain JavaScript, still runs where code generation is blocked, and can be compiled away at build time. Passes the full official test suite. https://socket.dev/npm/package/ata-validator

Agent for collecting, processing, aggregating, and writing metrics, logs, and other arbitrary data.

Unofficial MyAnimeList PHP+REST API which provides functions other than the official API

Powerful, joyful building blocks for modern cloud-native applications.

https://wiki.seeedstudio.com Seeed Studio Wiki source code