Sites like openaddresses.io

Nominatim, an open-source geocoding software and API using OpenStreetMap data for place name and address lookup, maintained by Sarah Hoffmann

Kyle Walker's data science blog and consultancy site on GIS, census demographics, and spatial analysis in R

MapLibre is an umbrella organization developing open-source mapping libraries and tools for web, mobile and vector tiles

Protomaps: a free, customizable open source world map distributed as a single PMTiles file, with a hosted tile API

A collaborative independent online publication on geotechnology and culture, focusing on open source and open data, called GeoHipster

A podcast on data visualization hosted by Enrico Bertini and Moritz Stefaner, with episodes featuring researchers and designers

A crowdsourced map of publicly accessible toilets in the UK, with a blog and about pages by its contributors

VersaTiles, a free and open-source stack for generating, distributing and using OpenStreetMap map tiles, with a sponsor-funded server

The Open Source Geospatial Foundation website, a nonprofit hub supporting geospatial open source software projects, their community, events and governance

An Italian video streaming platform hosting federated PeerTube channels, such as those of mebitek and Maurizio Delladio

Gensim, an open-source Python library for topic modelling and semantic vector representation of text, by Radim Řehůřek

A podcast on geospatial mapping, GIS, and remote sensing tools, people, and ideas, hosted under the Mapscaping name

Scikit-learn, an open-source Python library of machine learning tools for predictive data analysis, with documentation, FAQ and installation guides

pgRouting project website documenting an open-source PostGIS extension for geospatial routing functionality, with manuals, workshops and sponsorship information

A Rust framework and documentation site for building fullstack web, desktop, and mobile apps with Dioxus

A community-built OpenStreetMap of Bexhill-on-Sea, East Sussex, with walking routes, leisure walks and street name histories

A one-person project of data dashboards and maps on Toronto elections, bicycle counts, intersection counts and TransformTO tracking

Personal website of Dr Robin Wilson, a freelance remote sensing, GIS, data science and Python consultant, with talks and theses

A Python plotting library documentation site for Matplotlib, covering static, animated and interactive data visualizations

Personal website of Sebastián Ramírez, a Colombian software developer, sharing ideas, guides and his open source projects like FastAPI

Organic Maps is a free, open-source offline maps and GPS navigation app for hiking, cycling and driving

Personal blog by Miguel Grinberg on Linux containers, Python performance, Forgejo and other software development topics

A web community and publication for API developers, with articles, a podcast, books and a newsletter by Phil Sturgeon

ecosyste.ms is a set of open source tools and APIs tracking package ecosystem data, documented with OpenAPI specifications

The HTTP Archive is a public dataset and reports project that crawls top websites to track how the web is built

The official home of Xfce, a lightweight desktop environment for UNIX-like operating systems, with release news and blog posts

Vincent De Oliveira's bilingual blog and portfolio on CSS, SVG, UI design, maps and open-source web code

The HDF Group, a non-profit company maintaining the HDF5 data format and library for scientific and engineering data management

The MacPorts Project's official site offering a package manager for installing open-source software on macOS and other Unix-like systems

Typesense, an open source in-memory search engine and alternative to Algolia and Elasticsearch, with documentation and Docker images

SciPy, an open source Python library of algorithms for scientific computing, covering optimization, integration, interpolation, statistics and differential equations

Packagist, the main public repository of PHP packages installable with the Composer dependency manager, with package search, API and feeds

Simon Willison's Weblog, a personal blog by developer Simon Willison on software, AI tools and web programming, plus a Gemini text-to-speech playground

Nextcloud, an open source self-hosted platform for file sharing and online collaboration as a Microsoft 365 alternative

Personal blog and portfolio of Eevee, covering writing, drawing, games, toys and dev logs, with an explicit-content marker

CocoaPods.org is a search and browse index for iOS, macOS and Swift library packages, with pages on the CocoaPods dependency manager

The Rust Programming Language project's official site for the Rust systems programming language, with documentation, learning resources and community pages

NuGet is the central package repository and package manager for .NET, with package search, download statistics and client tools

A French collaborative website on free and open-source geomatics, with articles, tutorials, press reviews and tool presentations

vis.js community edition: a JavaScript library for interactive network, timeline, graph and dataset visualizations in the browser

OpenEMR, an open-source electronic medical record software project with demos, wiki, chat, and certification funding pages