Sample datacards, shapefiles, and other files you can use for testing

React Flow | Svelte Flow - Powerful open source libraries for building node-based UIs with React (https://reactflow.dev) or Svelte (https://svelteflow.dev). Ready out-of-the-box and infinitely cust…

Pure JavaScript mbtiles parser. Based on sqlite.c compiled by emscripten.

Convert geographic coords to and from geomagnetic coords

A web app for simulating a waving flag.

Schema to Yup validation

Gray-Level Co-Occurrence Matrix image analyzer with WebGL.

A library to compute the Minimum Bounding Rectangle of a GeoJSON polygon

Draw an image with SVG

Interactive, thoroughly customizable maps in the browser, powered by vector tiles and WebGL

Super Low-Level Raster Reprojection and Resampling Library

Searchable Dropdown

React-Native library for detecting beacons (iOS and Android)

Matrix manipulation and computation library

Icon font generation tool

Drag-and-drop sortable component for nested data and hierarchies

ESP8266 core for Arduino

Use react-annotation with built-in annotation types, or extend it to make custom annotations. It is made for annotations in SVG.

Use d3-annotation with built-in annotation types, or extend it to make custom annotations. It is made for d3-v4 in SVG.

A tiny JavaScript library for calculating sun/moon positions and phases.

Draw tools for mapbox-gl-js

Format MIDI Sysex Messages

Audio waveform player

Tame the Web MIDI API. Send and receive MIDI messages with ease. Control instruments with user-friendly functions (playNote, sendPitchBend, etc.). React to MIDI input with simple event listeners (n…

The Select Component for React.js

Allow a Cypress chain to resolve to a promise

Feature-rich ORM for modern Node.js and TypeScript, it supports PostgreSQL (with JSON and JSONB support), MySQL, MariaDB, SQLite, MS SQL Server, Snowflake, Oracle DB (v6), DB2 and DB2 for IBM i.

React components for Stripe.js and Stripe Elements