Vectorized vector I/O using OGR

Fiona reads and writes geographic data files

Python interface to PROJ (cartographic projections and coordinate transformations library)

QGIS is a free, open source, cross platform (lin/win/mac) geographical information system (GIS)

Elegant astronomy for Python

Modular set of functions for SGP4 and SDP4 propagation of TLE and OMM.

Pyramids of map tiles in a single file on static storage

Hexagonal hierarchical geospatial indexing system

Build vector tilesets from large collections of GeoJSON features.

WebGL2 powered visualization framework

Kepler.gl is a powerful open source geospatial analysis tool for large-scale data sets.

High-performance Toolkit for WebGL-based Data Visualization

React friendly API wrapper around MapboxGL JS

A 3D/WebGL math library

Loaders for big data visualization. Website:

Rasterio reads and writes geospatial raster datasets

🍃 JavaScript library for mobile-friendly interactive maps 🇺🇦

N-D labeled arrays and datasets in Python

Movement trajectory classes and functions built on top of GeoPandas

PySAL: Python Spatial Analysis Library Meta-Package

Distributed version-control for geospatial and tabular data

Encode spatial data as topology in Python! 🌍 https://mattijn.github.io/topojson

A library for building rich, web-based geospatial 2D & 3D data platforms.

Fast conversion from Japanese "MOJ Map XML" (land registration polygons) into geospatial formats, written in Python. 法務省登記所備付地図データ（地図XML）を各種GISデータ形式に変換するコマンドラインツールおよびPythonライブラリ

Open Source Routing Engine for OpenStreetMap

The fastest and smallest JavaScript polygon triangulation library for your WebGL apps

Open3D: A Modern Library for 3D Data Processing

QEP's (QGIS Enhancement Proposals) are used in the process of creating and discussing new enhancements for QGIS