Geologic symbols library and development for QGIS

A list of available Barcode & QR Code Datasets

A javascript browser module for detecting symbology (i.e. barcodes) scanner hardware input.

Free and Open-Source Software libraries implementing OGC Cartographic Symbology 2.0, CQL2 and Simple Features (WKT/WKB, GeoJSON and DE-9IM)

Cheatcodes to the Universe

Adinkra Symbols API - meanings of adinkra symbols, symbol images and synopsis around them

This script aims to automate the step of adding QGis parameters as SVG attributes values to make them readable by QGis

5 files, each containing 5 custom symbols that can be utilized for displaying current conditions of assets, resources, or events with 3 to 7 unique characteristics or key indicators, each controlled by an individual symbology field.

Files used for generating cave maps in GIS software.

Public Domain Works by Thomas S. Sozinskey (1852-1889).

QGIS SVG symbol pack converted from Geosiana marker fonts, organized for Style Manager and RBI-inspired cartographic workflows.

Public Domain Works of Richard Payne Knight (1751-1824).

A FastAPI service that maintains temporal mappings between human-readable symbols (e.g. NVDA) and numeric identifiers, with point-in-time lookups and explicit lifecycle management.

Detection and representation of barcode symbologies and AIM identifiers.

Public Domain works by Joseph-Daniel Guigniaut (1794-1876).

Interactive web tools for generating and visualizing propolis matrix codes — a hexagonal 2D barcode format using Eisenstein integer coordinates and Hamming error correction. Includes a live demo site with side-by-side QR comparison, a TypeScript encoder/renderer library that exactly matches the C++ reference implementation, and a comparison suite.

Bloomberg LP