Extensions
Here you can find extensions for Microsoft Dynamics 365 Business Central. These projects are open source and free to use.
BingMaps SDK
This is a library which provides a set of tools that make it easy to access the Bing Maps REST services in AL.
You can find the source code for BingMapsSDK at GitHub: BingMapsSDK
SQL SDK - OnPrem Only
This is a library which provides a set of tools that make it easy to access and manage SQL scripts in AL.
You can find the source code for SQLSDK at GitHub: SQLSDK
The Things Stack SDK
This is a library which provides a set of tools that make it easy to access The Things Stack REST services in AL.
You can find the source code for The ThingsStack SDK at GitHub: TheThingsStackSDK