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Talk resources for Esri Dev Summit 2019
ArcGIS JavaScript sample that let's you add a shapefile to your web map.
A Bootstrap theme for designing, styling and creating modern map apps.
Authoritative front-end development resources for Calcite design initiative. Includes extendable base components and styles, as well as a modular and efficient framework for ArcGIS properties.

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Dojo 2 - source for the Dojo 2 website
A stylus library containing functions for generating flexbox prefixes.


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A port of the Tale theme for Hugo. Tale is a minimal theme curated for storytellers.


View GeoJSON based on a URL param
An example Svelte application that shows how to use esri-loader to load a map
Check out the Earth's most interesting locations.
Experiments in lazy loading the ArcGIS API for JavaScript
A live map of crime in the city of St. Louis, MO
Want do develop your own widget for the ArcGIS JavaScript API 4.x? Avoid creating all the boilerplate by starting with this set of files.
📄 Awesome resource list for ArcGIS Developers -> could you help us with a Star? ⭐


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Repository for javascript and html basketball shotchart visualizations.
Documentation, API Reference and Samples
Quickly show esriJson, geoJson, or WKT on a map, or draw on a map to get esriJson, geoJson, or WKT
30 Day Vanilla JS Challenge
Passenger data for St. Louis Lambert Airport


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Import and export GitHub issues via CSV
Convert a CSV to GeoJSON
A simple page to filter and find Esri Web AppBuilder widgets.
Featuring examples of using TypeScript with Web AppBuilder for ArcGIS
Dev Summit 2016 Presentation "Web AppBuilder for ArcGIS: Development tools and Techniques"
Grunt task to control ArcGIS Server (via AGS Admin REST)
Weather widget for atlasboard


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GitHub Action publishing Sapper to GitHub Pages:
Widget to allow user to find restaurants using the Yelp API.
A script to take a GeoJSON file, and JOIN data onto that file from a CSV file.
CSV data of the USA soccer teams and locations
A demo widget that shows basic Wikipedia search / location display.
Example of creating a new widget, extending from an existing ArcGIS Web AppBuilder widget in the process to reduce code duplication.
Map of city flags.
NBA API -> Feature Service
A simple node.js application to proxy Imgur images.
irl presentations
A simple geocoder for node.
Split a polygon into N similarly sized polygons
Example WAB widget in ES6
Code and materials for "Web AppBuilder for ArcGIS: Customizing and Extending" talk at User Conference 2019
Data set of minor league baseball teams
Basemap styles for all your favorite sports teams!


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A community-supported open source mapping framework built with the Esri JavaScript API and the Dojo Toolkit
A NodeJS API and Web Framework for creating killer apps
A collection of useful resources for developers using the ArcGIS API for JavaScript.
Web App Builder created and managed by the Esri Solutions teams.
List and geospatial data for Catholic Parishes of the St. Louis Archdiocese
Custom Web Appbuilder widget that allows display of GBFS bikeshare locations.
Code and materials for "Web AppBuilder for ArcGIS: Customizing and Extending" talk at Dev Summit 2020.
Example of npm scripts needed to automatically copy your files from your repo out to your WAB install.
View Open Location Codes (aka 'plus codes') in Web AppBuilder


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Development repo for the AdoptA application
my advent of code solutions
Starter application that simplifies the process of building templates for the template gallery.
CLI to build a template application and widgets using the ArcGIS API for JavaScript
A module that implements the dojo/store API for ArcGIS Server REST services.
Calcite components, built in React
Convert a list of colors to a vector tile style.
Create chat bots for Facebook Messenger, Slack, Amazon Alexa, Skype, Telegram, Viber, Line, GroupMe, Kik and Twilio and deploy to AWS Lambda in minutes
Examples for dojo-webpack-loader


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A website and user system for Node.js
A lightweight set of tools for working with ArcGIS services in Leaflet.
API helpers and UI controls for geocoding with the ArcGIS Geocoding Service with Leaflet.
Display ArcGIS Online vector basemaps w/ Esri Leaflet
Package used to build ESRI Web App Builder Apps for production.
Ehanced draw widget for WebApp Builder for Arcgis.
Yeoman generator to help customize Esri's WebAppBuilder
Yeoman generator to help customize Esri's WebAppBuilder
Yeoman generator to create custom Dojo widgets for Esri web applications


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Chrome extension that displays availability of ebooks and audiobooks from your local library on Good Reads pages.
Sorts a JSON array of objects by the values of specified key(s).
GTFS proto schema to JS Module using the PBF package
The simplest possible modal for jQuery
A provider for koop to show bikeshare locations
A draggable lens widget for the ArcGIS API for JavaScript
A template to create a configurable, filterable, and responsive application for your maps, apps, and more.
JavaScript example illustrating how to use the Maritime Chart Service functionality provided by ArcGIS for Maritime: Server.
Client library for wrapping REST API functions. Primarily focused on filling the gaps of Geoservices.js - specifically content management, org administration, etc.


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MediaWiki API client written in node.js
Parcel Drafter is a web application designed to create and edit parcels. This application can be used to supplement your on-premise parcel data management workflow, or used standalone.
Hurricane Michael Damage Assessment


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perennial location for Esri Reveal.js conference templates


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Chat bot for asking questions about your community with open data


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Javascript widget to aggregate and display one or more public Google Calendar feeds
Tools and Techniques for Web AppBuilder Development Presentation from Dev Summit 2015

Jupyter Notebook

Ideas for a more advanced Python class for GIS and Remote Sensing,


Embed a public webmap from ArcGIS Online into WordPress with a shortcode.


Continuously ping a web address at a specified interval and log the results to a CSV file.
This script is used to merge the CSV of Vacant Parcels generated from the STL Vacancy Project and the official City of St. Louis Parcels Shapefile to enable mapping and visualization of the data.
A demo for how to download the main images from a list of wikipedia pages using Scrapy (
Display for Sonos
Crime info from University City, MO


Official Sass port of Bootstrap 2 and 3.



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:crystal_ball: Transform, query, and download geospatial data on the web.


Extent helper for web apps in the ArcGIS API for JavaScript
Example of an Experience Builder widget that can wrap any ArcGIS API for JavaScript widget
Camera helper for 3D web apps in the ArcGIS API for JavaScript
Simple, empty widget template to use with ArcGIS Experience Builder
compact, modular JavaScript wrappers for the ArcGIS REST API
Example Experience Builder widget showing how to add a Feature Layer to a map.
The repository for high quality TypeScript type definitions.
A tiny library to help load ArcGIS API for JavaScript modules in non-Dojo applications
Example Experience Builder widget showing how to display the latitude and longitude, scale, and zoom level of the map.
React component kit for the ArcGIS API for JavaScript
Project Manager Extension for Visual Studio Code