Google Contacts is a free, easy-to-use contact management tool that allows you to organize your contacts in a simple interface with fields and segmentation. It has native integrations to other Google products such as Google Calendar, Google Drive and Gmail.
Missive is a collaborative app that lets you manage all your shared inboxes from a single place. Features like chat, tasks, shared contacts and assignment bring seamless collaboration around these inboxes.
Missive is ideal for managing support and sales inboxes! And on top of email, it works with Facebook, SMS, and Twitter accounts.
No more silos, have all your internal end external communications in one beautiful application.
PieSync offers the only solution in the market to keep your customer data in sync two-ways and in real time, processing new entries as well as historical data. Your contacts are kept in sync automatically, so you don't need to worry about it once the configuration is set up.