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Web Mapping

2026

  • spatial-access-measures: Web map using DuckDB-WASM and GeoParquet for in-browser SQL queries and filtering of Statistics Canada spatial access measures (transit, cycling, and walking accessibility to jobs, schools, and services). No server backend required — everything runs in the browser. Demo [Keywords: DuckDB-WASM GeoParquet deck.gl in-browser SQL accessibility Canada cloud-native]

  • deck.gl-raster: Client-side visualization library for large raster datasets like COGs and Zarr arrays directly in the browser using WebGL2 through deck.gl, with GPU-accelerated processing for color mapping and reprojection. [Keywords: deck.gl COG Zarr WebGL raster visualization cloud-native JavaScript]

  • PocketBase: Open-source backend delivered as a single executable file, with a realtime SQLite database, built-in authentication, file storage, and an admin dashboard — can be extended with Go and JavaScript hooks. [Keywords: backend SQLite authentication JavaScript Go open-source web development]

  • Leaflet.Canvas-Flowmap-Layer: A Leaflet plugin for mapping the flow of objects, ideas, or people using animated Bezier curves rendered on HTML canvas — great for origin-destination flow map visualizations. [Keywords: web mapping Leaflet flowmap origin-destination animation canvas JavaScript]

  • Standalone Web Maps Workshop - FOSS4G 2025: Workshop teaching creation of standalone web maps using Overpass and MapLibre, then deploying to GitHub Pages without a server. [Keywords: web mapping MapLibre GitHub Pages OSM FOSS4G JavaScript]

2025

  • Mapweaver: A web app for making tiled and woven maps for multivariate and bivariate data visualization. [Keywords: web mapping cartography bivariate tiled visualization JavaScript]

2024

  • QGIS Web Viewer Plugin: QGIS plugin for publishing maps as web viewers. [Keywords: web mapping QGIS plugin viewer JavaScript]

Earlier

  • Web GIS Development Roadmap: GIS Lounge guide to open source web GIS development roadmap and technology stack. [Keywords: web mapping GIS roadmap open source JavaScript]

  • Cloud Native Geospatial Map: Article on next-generation interactive maps using cloud-native geospatial technologies. [Keywords: web mapping cloud-native interactive COG STAC]