You can also look up for these other topics:
Framework
Coding Standards
Boilerplate
CMS
Tool
Security
Hacktoberfest
A Simple and Lightweight WordPress Option Framework for Themes and Plugins
CodestarSimple and fast WordPress theme designed to help you attract and engage more visitors. Provides a perfect user experience on smartphones. Powers 100k+ active sites around the world. Hundreds of 5-star
presscustomizr