You can also look up for these other topics:
Framework
Coding Standards
Boilerplate
CMS
Tool
Security
Hacktoberfest
Multiple bylines and Guest Authors for WordPress
A WordPress plugin that provides an easy way to add custom fields to your object types (post, pages, custom post types, users)
WordPress plugin to inspect your rewrite rules.
With Media Explorer, you can now search for tweets and videos on Twitter and YouTube directly from the Add Media screen in WordPress.
A fresh take on running WordPress's cron system, allowing parallel processing
Easily manage the ad codes that need to appear in your templates