Roots helps you build better WordPress sites faster.
Open-source tools for WordPress application development.
VersionPress is a free and open source version control plugin for WordPress built on Git. You can:
Undo changes
Create staging sites
Merge databases ← yes, really!
Simply update your sites with confidence.
DuckRails is a development tool.
Its main purpose is to allow developers to quickly mock API endpoints that for many possible reasons can't reach at a specific time.
Mailtrain is a self hosted newsletter application built on Node.js (v5+) and MySQL (v5.5+ or MariaDB). Mailtrain supports subscriber list management, list segmentation, custom fields, email templates, large CSV list import files, etc.