Kontact Alternatives

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.

Spend less time managing your day & more time enjoying it

The #1 email warming service to improve your deliverability by generating realistic and meaningful engagement to your emails. Easy-to-use solution to help you land in the main inbox instead of the spam folder.

Visit website paid $19.5 / Monthly (Pro)

Access and edit your contacts from personal, business, and other accounts with the Contacts app.

Open Contacts is an advanced address book program for managing contact info of individuals and...

Automagically scan biz cards into LinkedIn/Gmail contacts

A simple calendar with events (optional recurring and reminders), week numbers and a customizable...

Open Source

Organize your world. Outlook’s email and calendar tools help you communicate, stay on top of what matters, and get things done.

Rainlendar - Customizable desktop calendar

KAddressBook stores all the personal details of your family, friends and other contacts.

Calendar is a personal calendar app made by Apple Inc. that runs on both the macOS desktop operating system and the iOS mobile operating system.

Free service that takes care of your contacts, calendars and more so you don't have to.

Put the power of full contact information into your web or mobile apps.

Material design open source calendar for Android.