Community Builder (CB) is the most powerful, yet simple and free, Social Networking solution for Joomla. CB has literally hundreds of built-in features and can be extended with extra both free and commercial. We have been using CB on many sites for over a decade, it's extremely extensible, stable, and well supported, we also develop custom extensions for CB.
This job involved installing a new site built by another developer on the clients hosting, updating the Joomla version, along with the template and all extensions, implementing additional site security measures, along with automated daily site backups.
Andrew rocks. We will be working with him for a long time.