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  1. 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.
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  2. The Nextcloud contacts app is a user interface for Nextcloud's CardDAV server. Easily sync contacts from various devices with your Nextcloud and edit them online. 🚀 Integration with other Nextcloud apps! Currently Mail and Calendar – more to come.


  3. The top contact management platform for professionals, teams and small businesses. Sync, deduplicate, enrich, & more. Effortlessly manage your address book contacts with Contacts+.
    • FreeOpen Source
    • Android
    • Android Tablet
    • F-Droid
    A simple app for creating or managing your contacts from any source. The contacts can be stored on your device only, but also synchronized via Google, or other accounts. You can display your favorite contacts on a separate list.
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  4. Kontact is the integrated Personal Information Manager of KDE. Kontact suite unites mature and proven KDE PIM applications under one roof. Thanks to the powerful KPart technology, existing applications are seamlessly integrated into one.
  5. Even though we are not having any problem sharing our mobile number with all third parties, people in our phone book might have. We should not be sharing their contact information online. So, keep your contacts safe in a different database.
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  6. With the free and open source Corteza Service Cloud you can deliver faster and more personalised service to your clients. Customer service agents are provided with 360-degree overviews on cases, enabling them to provide the best service quickly.
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  7. An extremely light-weight, easy-to-use, theme-able dialer app, brings a lot to the table as yet another alternative to Android's stock dialer.

    Discontinued

    App unavailable.

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  8. Contacts keeps and organize your contacts information. You can create, edit, delete and link together pieces of information about your contacts. Contacts aggregates the details from all your sources providing a centralized place for managing your contacts.
  9. It supports large variety of services, including NextCloud, Kolab, Google Contacts, Microsoft Exchange (EWS) or any standard CalDAV server. Features: Powerful search - KAddressBook has configurable filters and powerful search capabilities.
  10. Next generation contact manager and dialer.
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  11. A powerful management suite for smartphones, which provides contacts, messages and multimedia handling features.
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    • FreemiumProprietary
    • Android
    • Android Tablet
    • Android Wear
    This app replaces the stock dialer and contacts manager on Android devices. It's a sophisticated, feature-rich contacts manager that includes social network integration for your contacts (Facebook, Twitter, Linkedin & Foursquare).
  12. Make notes, keep track of events and store to-dos for all your contacts. So next time you meet, a quick glance at the person's profile in Hippo is all you need to remember the details. Being attentive doesn’t have to be a challenge anymore.
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  13. CRM, inside Gmail. Run your entire business from your Inbox Simple Collaboration Collaborate with a single click. Share contacts, email, files, and anything else needed to get the job done. Multipurpose
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