There are 3 repositories under web-appbuilder topic.
Yeoman generator to help customize Esri's WebAppBuilder
Find developer resources for Oriented Imagery, including a Web AppBuilder widget and oriented imagery catalog (OIC) schema.
A simple page to filter and find Esri Web AppBuilder widgets.
Featuring examples of using TypeScript with Web AppBuilder for ArcGIS
Web AppBuilder widgets for linear referencing.
Closest Facility widget for Esri JavaScript Web Application Builder
A demo widget that shows basic Wikipedia search / location display.
A hierarchical address search widget for use with the Esri Web AppBuilder
Convert Web sites into Progressive Web Applications using IFRAME.
Widget to allow user to find restaurants using the Yelp API.
Code and materials for "Web AppBuilder for ArcGIS: Customizing and Extending" talk at Dev Summit 2020.
Talk resources for Esri Dev Summit 2019
what3words reverse geocoding widget for ArcGIS Web AppBuilder https://what3words.github.io/w3w-arcgis-webappbuilder-widget/WebApp-what3words/
Code and materials for "Web AppBuilder for ArcGIS: Customizing and Extending" talk at User Conference 2019
This is a custom Web AppBuilder widget to help search and view LRSServer enabled map services.
Custom Web Appbuilder widget that allows display of GBFS bikeshare locations.
View Open Location Codes (aka 'plus codes') in Web AppBuilder
blue it marketing web application
Widget Query personalizado para atender a uma demanda para um aplicativo específico no ArcGis Portal.