The people who developed Pipedrive wanted and easy to use system that people could use without having to purchasing various different systems. There are a number of integrations & add-ons that can be used with Pipedrive, and a few of the more popular ones are Google apps, Google maps, Zapier, Trello, Yesware, and MailChimp. It was designed in order to help people manage their business, and some of the management features that Pipedrive posses are no restrictions, fully customizable at all levels of use, clarity on what is needed the most at any given time, intuitive & easy to use, and allows people to find the stats that they need most when they actually need them.