The term SDK stands for software development kit. It is a collection of tools that allow developers to build software for specific platforms. An SDK can consist of (but is not limited to) a compiler, debugger, libraries, documentation, and code samples.
A simple photo editing android application
An unofficial Java SDK for 1Password Connect
Supercharge Notion with custom commands to record, draw, and more ✍️
Unofficial Medium Python Flask API and SDK
Python API to develop chatbot on Facebook Messenger Platform