# JSON for Modern C++

> JSON library for modern C++

A header-only library that makes JSON feel like a first-class C++ type.

- Source: https://github.com/nlohmann/json
- Homepage: https://json.nlohmann.me
- License: MIT
- Language: C++
- Stars: 50714
- Forks: 7510
- Contributors: 350
- Last commit: 2026-10-02
- Latest release: v3.12.0 (2025-04-11)
- Purpose: Developer tools
- Runs on: Library / SDK
- For: Personal, Enterprise

## Worth score: 76/100

How much DigGitHub recommends it, from activity, adoption, docs, license and security signals.

- Popularity: 24/25
- Momentum: 10/20
- Maintenance: 17/25
- Community: 14/15
- Readiness: 11/15

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Source page: https://diggithub.com/nlohmann/json
Updated: 2026-10-03