Repositories list

• city3d-stac-registry

  Public
  A registry for City3D STAC catalog

  spatio-temporalcityjsonspatiotemporal-asset-catalog+ 1

  spatio-temporalcityjsonspatiotemporal-asset-catalog3dcitymodels

  Just

  •

  MIT License

  •00 forks•22 stars•00 issues•22 pull requests•Updated Apr 20, 2026Apr 20, 2026

• duckdb-cityjson

  Public
  C++

  •

  MIT License

  •11 fork•88 stars•00 issues•11 pull request•Updated Apr 14, 2026Apr 14, 2026

• city3d-stac-map

  Public
  A map-first STAC search and visualization tool especially designed for 3D city models

  citygmlcityjsonspatiotemporal-asset-catalog+ 1

  citygmlcityjsonspatiotemporal-asset-catalog3dcitymodels

  TypeScript

  •

  MIT License

  •1111 forks•00 stars•00 issues•00 pull requests•Updated Apr 13, 2026Apr 13, 2026

• cjval

  Public
  Official validator for CityJSON + CityJSONSeq datasets

  cityjson

  cityjson

  Rust

  •

  MIT License

  •33 forks•1010 stars•11 issue•00 pull requests•Updated Apr 2, 2026Apr 2, 2026

• cityjson-qgis-plugin

  Public
  A QGIS plugin that adds support for CityJSON files

  metadataqgiscityjson+ 1

  metadataqgiscityjsonqgis-plugins

  Python

  •

  Apache License 2.0

  •1414 forks•4545 stars•2121 issues•00 pull requests•Updated Mar 31, 2026Mar 31, 2026

• cjval_wasm

  Public
  cjval compiled for WASM

  JavaScript

  •

  MIT License

  •33 forks•33 stars•11 issue•00 pull requests•Updated Mar 30, 2026Mar 30, 2026

• website

  Public
  Source code for https://cityjson.org

  HTML

  •

  MIT License

  •3.8k3.8k forks•22 stars•00 issues•11 pull request•Updated Mar 27, 2026Mar 27, 2026

• specs

  Public
  Specifications for CityJSON, a JSON-based encoding for 3D city models

  citygml3d-modelssmart-city+ 1

  citygml3d-modelssmart-citycityjson

  Bikeshed

  •

  Creative Commons Zero v1.0 Universal

  •2626 forks•119119 stars•1111 issues•44 pull requests•Updated Mar 27, 2026Mar 27, 2026

• stac-city3d

  Public
  STAC extension for 3D city models

  citygml3dcng+ 2

  citygml3dcngcityjsonspatiotemporal-asset-catalog

  Apache License 2.0

  •00 forks•33 stars•00 issues•00 pull requests•Updated Mar 22, 2026Mar 22, 2026

• extensions

  Public
  A registry for CityJSON Extensions

  Python

  •00 forks•00 stars•00 issues•00 pull requests•Updated Mar 20, 2026Mar 20, 2026

• flatcitybuf

  Public
  CityJSON encoding with FlatBuffers

  flatbuffersgeospatialcityjson+ 2

  flatbuffersgeospatialcityjsoncloud-optimized3dcitymodels

  Rust

  •

  Other

  •33 forks•2828 stars•11 issue•22 pull requests•Updated Mar 7, 2026Mar 7, 2026

• cjext-builder

  Public
  A simple webapp to build CityJSON Extensions schemas files

  HTML

  •00 forks•00 stars•00 issues•00 pull requests•Updated Jan 16, 2026Jan 16, 2026

• cj-mcp

  Public
  Beta version: MCP server for CityJSON spec

  mcpcityjson3dcitymodels+ 1

  mcpcityjson3dcitymodelsmcp-server

  TypeScript

  •

  MIT License

  •00 forks•11 star•00 issues•00 pull requests•Updated Dec 22, 2025Dec 22, 2025

• ogr2cityjson

  Public
  Python

  •11 fork•22 stars•00 issues•11 pull request•Updated Dec 3, 2025Dec 3, 2025

• cjseq

  Public
  Create+process+modify+convert CityJSONSeq

  Rust

  •

  MIT License

  •22 forks•1010 stars•00 issues•00 pull requests•Updated Nov 6, 2025Nov 6, 2025

• ninja

  Public
  A web viewer for CityJSON files

  Vue

  •

  Apache License 2.0

  •1717 forks•5252 stars•2929 issues•11 pull request•Updated Jul 29, 2025Jul 29, 2025

• cityjson-threejs-loader

  Public
  threejscityjson

  threejscityjson

  JavaScript

  •

  Apache License 2.0

  •2121 forks•2727 stars•55 issues•11 pull request•Updated Jul 29, 2025Jul 29, 2025

• flatcitybuf-web-prototype

  Public
  Web prototype application to demonstrate FlatCityBuf

  geospatialcitygmlcityjson+ 2

  geospatialcitygmlcityjsoncloud-optimized3dcitymodels

  TypeScript

  •00 forks•11 star•00 issues•00 pull requests•Updated Jul 22, 2025Jul 22, 2025

• RhinoCityJSON

  Public
  Rhino/Grasshopper plugin allowing the CityJSON format to be directly used in Rhino 3D and grasshopper

  C#

  •

  MIT License

  •33 forks•1818 stars•00 issues•00 pull requests•Updated Jul 18, 2025Jul 18, 2025

• cjio_dbexport

  Public
  Export tool from PostGIS to CityJSON

  Python

  •

  MIT License

  •11 fork•66 stars•33 issues•00 pull requests•Updated Jun 24, 2025Jun 24, 2025

• cjio

  Public
  CityJSON/io: Python CLI to process and manipulate CityJSON files

  cityjson

  cityjson

  Python

  •

  MIT License

  •3535 forks•144144 stars•5252 issues•00 pull requests•Updated May 9, 2025May 9, 2025

• cjdb

  Public
  cjdb is a tool enabling CityJSON integration with a PostgreSQL database

  Python

  •

  MIT License

  •22 forks•1919 stars•77 issues•00 pull requests•Updated Feb 18, 2025Feb 18, 2025

• paper_cjseq

  Public
  Repository for the paper about streaming 3D city models with CityJSONSeq

  TeX

  •00 forks•11 star•00 issues•00 pull requests•Updated Feb 7, 2025Feb 7, 2025

• cjvalpy

  Public
  Python bindings of cjval

  Rust

  •

  MIT License

  •22 forks•00 stars•00 issues•00 pull requests•Updated Nov 6, 2024Nov 6, 2024

• cjseqview

  Public
  a small python program to visualise CityJSONL datasets

  Python

  •

  MIT License

  •22 forks•99 stars•00 issues•00 pull requests•Updated Jun 4, 2024Jun 4, 2024

• metadata-extended

  Public
  CityJSON Extension to store ISO19115-compliant metadata, extends the few metadata properties of the core

  Creative Commons Zero v1.0 Universal

  •11 fork•11 star•11 issue•00 pull requests•Updated Apr 8, 2024Apr 8, 2024

• Up3date

  Public
  A Blender add-on to import, edit and export 3D city models encoded in CityJSON v.1.0 format preserving geometries, attributes and semantics

  etlblendercityjson+ 1

  etlblendercityjson3dcitymodels

  Python

  •

  MIT License

  •1818 forks•7474 stars•1515 issues•00 pull requests•Updated Mar 17, 2024Mar 17, 2024

• misc-example-code

  Public
  Some demo code to show how to parse/manipulate/transform/convert CityJSON files, in different languages

  C++

  •

  MIT License

  •11 fork•00 stars•11 issue•00 pull requests•Updated Oct 4, 2023Oct 4, 2023

• themotherofallfiles

  Public
  the one file to rule them all

  Creative Commons Zero v1.0 Universal

  •00 forks•22 stars•00 issues•00 pull requests•Updated Jul 12, 2023Jul 12, 2023

• restful_demo

  Public
  Python

  •22 forks•55 stars•11 issue•22 pull requests•Updated May 1, 2023May 1, 2023