Our primary CRM tool for customer support, and our primary CMS tool for customer-facing knowledge. We use it to handle email tickets and live chat, including some automated routing and custom filters. We also use the built-in customer satisfaction tool to track customer health and agent performance. We use the built-in CMS knowledgebase tool as well, for an external (customer-facing) knowledgebase and an internal support staff knowledgebase. Having a CRM allows our support team to be more efficient and transparent, but Desk isn't a particularly great tool considering others on the market.