mourner/projects: A list of Volodymyr Agafonkin's open source projects · GitHub

Open source projects I created, maintain or significantly contributed to, with a focus on maps, computational geometry & data visualization. Most are tiny, dependency-free, and built for exceptional performance.

Project	Role	★	Description
Leaflet	author	46k	The number one JavaScript library for interactive maps.
Mapbox GL JS	core dev	12k	JavaScript/WebGL vector maps library.
pixelmatch	author	6.9k	The fastest and smallest pixel-level image comparison library.
suncalc	author	3.5k	Tiny library for calculating sun/moon positions and phases.
flatbush	author	1.6k	Fast static spatial index for 2D rectangles and points.
rbush	author	2.8k	Fast dynamic R-tree-based 2D spatial index.
delaunator	author	2.6k	The fastest JS Delaunay triangulation library for 2D points.
earcut	author	2.6k	The fastest and smallest JS polygon triangulation library.
supercluster	author	2.4k	Fast geospatial point clustering library.
geojson-vt	author	2k	Fast tile-based geospatial index for GeoJSON data.
polylabel	author	1.6k	Finds the pole of inaccessibility of a polygon (for labeling).
mapbox-gl-native	core dev	4.5k	OpenGL-based vector maps rendering engine (archived).

Project	Role	★	Description
kdbush	author	0.7k	Fast static spatial index for 2D points in JavaScript.
robust‑predicates	author	0.3k	Fast robust geometric predicates (modern JS port of Shewchuk's).
concaveman	author	0.7k	Fast concave hull algorithm in JS.
cheap-ruler	author	0.4k	Fast approximations for common geographic measurements.
tiny-sdf	author	0.7k	Browser-side signed distance field generation from text.
potpack	author	0.4k	A tiny and fast JS rectangle packing library (for sprite layouts).
MARTINI	author	0.7k	Fast terrain meshing via right-triangulated irregular networks (RTIN).
delatin	author	0.3k	Fast terrain meshing via Delaunay-based greedy triangulation.
d3-delaunay	core dev	0.7k	Fast Voronoi diagram library for 2D points (based on Delaunator).
delaunator-rs	author	0.3k	A port of Delaunator to Rust.
earcut.hpp	core dev	1k	C++11 port of Earcut.
geoflatbush	author		Geographic queries for Flatbush.
geokdbush	author	0.4k	Geographic kNN queries for kdbush.
rbush-knn	author		kNN search plugin for RBush.
simplify-js	author	2.4k	Fast JS polyline simplification library.
lineclip	author		Fast library for clipping polylines and polygons by a bbox.
linematch	author		Fast algorithm for comparing polyline sets (e.g. road networks).
which-polygon	author		Fast index for point-in-polygon queries (e.g. point-in-country).
dobbyscan	author		Fast density-based clustering of geographic points.
icomesh	author		Fast icosphere mesh generation library for WebGL visualizations.
circle-union	author		Fast union of geographic circles as coverage polygons.

Project	Role	★	Description
flamebearer	author	1.7k	A JavaScript CPU trace analysis tool for agents and humans.
pbf	maintainer	0.9k	Low-level, lightweight protocol buffers encoder/decoder for JS.
webgl-wind	author	1.1k	WebGL-powered wind particle visualization.
simpleheat	author	1k	Tiny JavaScript library for drawing heatmaps with Canvas.
Leaflet.heat	author	1.7k	Simple, fast heatmap plugin for Leaflet.
bullshit.js	author	1.9k	Bookmarklet to expose bullshit on web pages.
road-orientation-map	author	0.3k	A visualization of road orientations on an interactive map.
claudefiles	author		Tiny Claude Code efficiency kit (status line & guard hook).
tinyjam	author		A radically simple, zero-configuration static site generator.
yeahjs	author		A tiny, fast, modern EJS templating library.
yeahml	author		A tiny, fast JS parser for a strict subset of YAML.
geobuf	maintainer	1k	Compact binary encoding for geospatial data.
vector-tile-js	maintainer	0.4k	Library for parsing Mapbox vector tiles in JavaScript.
tinyqueue	author	0.5k	Small and simple JS priority queue.
flatqueue	author		A faster but more limited variation of tinyqueue.
quickselect	author		Fast selection algorithm in JavaScript (Floyd-Rivest).
simple-statistics	core dev	3.5k	Descriptive, regression, and inference statistics for JS.

Older, deprecated, unfinished or experimental projects — kept as a record of past work.

Project	Role	Description
magic-string	core dev	Tool for generating source maps (earlier contributions).
kothic-js	core dev	Full-featured JS map rendering engine using HTML5 Canvas (earlier contributions).
dead-simple-grid	author	250-byte CSS grid framework (unmaintained).
tile-cover	core dev	Generates the minimum set of tiles that cover a geometry (unmaintained).
tile-reduce	core dev	Scalable vector tile geospatial analysis library for Node (unmaintained).
geojson-vt-cpp	core dev	C++11 port of GeoJSON-VT (archived).
seidel	author	Seidel's polygon triangulation in JS (deprecated).
binary-split	maintainer	Fast Node.js stream splitter.
geojson-cpp	author	C++14 library for converting GeoJSON into geometry.hpp representation (archived; formerly geojson.hpp).
mbtiles-extracts	author	Tool for extracting regional subsets of MBTiles files (archived).
bbtrees	author	Self-balancing binary search tree implementations in JS (unfinished).
supercluster.hpp	author	C++14 port of Supercluster (archived).
tile-decorator	author	JS tool for optimizing vector tiles (unmaintained).
github-org-browser	author	Simple tool for browsing public repos of a GitHub organization.
kdbush.hpp	author	C++11 port of KDBush (archived).
cumulative-timer	author	Simple cumulative timer for benchmarking JavaScript (archived).
Leaflet.TouchHover	author	Leaflet plugin for hover interactions on mobile.
polysnap	author	Snap rounding a polygon with self-intersections (a work in progress).
suncalc-go	author	Go port of SunCalc (unfinished).
polyclip	author	Martinez polygon boolean operations in JS (unfinished).
pbf-split	author	Splits a Node stream of length-prefixed protocol buffer messages (deprecated).
fanny	author	Experiments with feedforward neural networks in JS.
rollup-plugin-unassert	maintainer	A Rollup plugin to remove assertion calls via Unassert.
hain	author	Port of Hain's polygon trapezoidation in JS (unfinished).

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