Websites to Address book integration

Gmail, a cornerstone of Google's productivity suite, is a free, web-based email service renowned for its intelligent organization, powerful search capabilities, and integration with other Google services. Available across various platforms, it remains a leading choice for personal and professional communication.

ALTO Mail is an intelligent email client designed to simplify real-life organization. It offers a unified inbox, robust features like built-in calendars, and integration capabilities to streamline communication and tasks.

Soocial was a cloud-based synchronization service designed to keep your contacts consistent and up-to-date across various devices, applications, and platforms, including computers, phones, and web services.

Kin Calendar is a sleek and intuitive calendar application designed for managing your schedule with ease. It offers seamless integration with popular services like Google Calendar and Facebook, supports multiple accounts, and includes features for reminders, events, and task management, all within a clean, ad-free interface.

Plaxo is a comprehensive online address book and contact management service designed to keep your contacts organized, synchronized, and up-to-date across various devices and platforms. It offers robust features for merging duplicates, integrating with popular services, and providing a unified view of your network.

Contacts is a fundamental contact management application designed for macOS, providing seamless integration within the Apple ecosystem for organizing and managing personal and professional connections.

Zoiper is a versatile and easy-to-use SIP softphone designed for clear voice and video communications. It offers excellent audio quality, robust security features, and seamless integration with various communication protocols, making it ideal for personal and business use.

Email.biz offers a secure and privacy-focused email service designed for businesses and individuals prioritizing data protection and generic domain identities. It provides essential communication tools including encrypted email, calendar, and contact management, with integrations for enhanced productivity.

Google Contacts is a contact management tool integrated with your Google Account, providing a centralized and accessible platform to store, organize, and manage your contacts across all your devices.

FullContact is a comprehensive platform designed to help businesses and individuals manage, enrich, and unify their contact information. It goes beyond a simple address book, providing powerful tools for cleaning data, discovering professional details, and integrating with existing workflows to create a complete view of every contact.

Nylas Mail, an extensible open-source email client, offers a unified inbox, robust search, and calendar integration. It supports multiple accounts and provides features like email tracking and undo send, aiming to enhance productivity and email management for users.

Microsoft Outlook is a comprehensive personal information manager designed for managing email, contacts, calendars, and tasks.