End-to-end encrypted app for email, calendar, and contacts, requiring no personal data, with open source code and quantum-resistant security.
- WebMail Provider
- Freemium • Open Source
- Mac
- Windows
- Linux
- Online
- Android
- iPhone
- iPad
- Flathub
- F-Droid
+6K-9 is an open source email client for Android with multi-folder sync, email signatures, Bcc-to-self, return-address configuration, keyboard shortcuts, Exchange Support, message flagging, IMAP deletes, saving attachments, configurable notifications and more.
- Email Client
- Free • Open Source
- Android
- Android Tablet
- F-Droid
+3Introducing Fossify Contacts - the next evolution in contact management. Poised to redefine how you manage your contacts, our app combines simplicity with advanced features, tailored for both personal and professional use.
- Contact Manager
- Free • Open Source
- Android
- F-Droid
- Android Tablet
Evolution is a personal information management application that provides integrated mail, calendaring, address book and task list functionality.
- Email Client
- Free • Open Source
- Linux
- BSD
- Flathub
- S/MIME
- GNOME
- OpenPGP
+4Manage emails, calendars, contacts, and tasks with an intuitive interface. Features smart inbox, file management, and third-party app integration.
- Email Client
- Paid • Proprietary
- Mac
- Windows
- Online
- Android
- iPhone
- Android Tablet
- iPad
- Apple Watch
- Android Wear
+7eM Client is a full featured e-mail client with a modern and easy to use interface. eM Client also offers calendar, tasks, contacts, notes and chat.
- Email Client
- Freemium • Proprietary
- Mac
- Windows
- Android
+5E-mail inbox, online office, cloud storage, and video conferencing. Business or personal plans. From 1 € /month (1.10 USD).
- WebMail Provider
- Paid • Proprietary
- Online
+5Manage emails, integrate apps, and personalize your workspace with AI-powered drafting, centralized management, and customizable features for efficient workflows.
- Email Client
- Freemium • Proprietary
- Mac
- Windows
+5The ultimate app for organizing and customizing your contacts with a focus on privacy. Take control of your contact list by creating private contacts that are accessible only within the app, ensuring that your personal information remains confidential and secure.
- Contact Manager
- Free • Open Source
- Android
- Android Tablet
The Dialer app is a built-in phone application on Android devices, which manages your call history and contacts. It provides quick access to making calls and sending text messages through the application interface, including popular messengers.
- Contact Manager
- Freemium • Open Source
- Android
- Android Tablet
+4Google 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.
- Contact Manager
- Free • Proprietary
- Online
- Android
- Android Tablet
- Android Wear
+2Secure email hosting with webmail, IMAP, and POP protocols, ideal for individuals and businesses. Includes junk mail protection, file sharing, and 1Password integration.
- WebMail Provider
- Paid • Proprietary
- Online
- Android
- iPhone
- Android Tablet
- iPad
+6Koler is a uniquely stylized phone app for Android, designed with the user in mind.
Discontinued- Free • Open Source
- Android
- F-Droid
Manage contacts. Keep your contacts private and secured with OpenContacts independent and local database.
- Contact Manager
- Free • Open Source
- Android
- F-Droid
Keepmark is a desktop, privacy first documents organizer. You can organize with it your files, email, bookmarks, tasks, news, and other resources. Its available for Windows, Linux and Mac.
- Note-taking Tool
- Paid • Proprietary
- Mac
- Windows
- Linux
+5