What are /r/Dolibarr's favorite Products & Services?

From 3.5 billion Reddit comments

Dolibarr continues to grow and has a strong user and developer database. See this Retrospective of 2021: https://www.dolibarr.org/2021-retrospective-dolibarr.php

If you know PHP, you should be able to customize Dolibarr. Not that inventory for the MRP feature is available from v14 only.