You can also look up for these other topics:
Framework
Coding Standards
Boilerplate
CMS
Tool
Security
Hacktoberfest
Kimai is a web-based multi-user time-tracking application. Works great for everyone: freelancers, companies, organizations - everyone can track their times, generate reports, create invoices and do so
kevinpapstOroCRM - an open-source Customer Relationship Management application.
oroinc