Google Contacts - Google Contacts is Google's contact management tool that is available in its free email service Gmail, as a standalone service, and as a part of Google's business-oriented suite of web apps Google Apps.

Bigin - Introducing Bigin by Zoho CRM, the most simple-yet-powerful CRM solution for small and micro businesses. Get started today with your free CRM trial.

FullContact Card Reader - Automagically scan biz cards into LinkedIn/Gmail contacts

Haystack Search - Haystack helps you make the most of your time, by searching all your files and documents in the cloud in one place. It's been built for privacy from the ground up, so your data isn't stored on a server, just your computer.

Nextcloud Contacts - The Nextcloud contacts app is a user interface for Nextcloud's CardDAV server.

Typesense - Typo tolerant, delightfully simple, open source search 🔍