The best Calendar alternative to Aerion is Thunderbird, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Aerion and 13 are Calendar Apps so hopefully you can find a suitable replacement. Other interesting Calendar App alternatives to Aerion are Betterbird, Evolution, Microsoft Outlook and eM Client.
Cross-platform email client supporting multiple identities, chat, and strong filtering. Extend functionality with add-ons like RSS/Atom feed readers and PGP support.
Betterbird, a soft fork of Mozilla Thunderbird, improves user experience with advanced features, bug fixes, security patches, and multi-row descriptions similar to Outlook. Compatible with multiple platforms and can be used alongside Thunderbird, sharing the same profile.
Evolution is a personal information management application that provides integrated mail, calendaring, address book and task list functionality.
Streamline emails, calendars, contacts, and task management with a smart inbox prioritizing critical messages. Includes calendar scheduling, third-party app integration like Facebook, Dropbox, and Trello, and support for Microsoft Exchange, Outlook.com, and Gmail, ensuring efficient task and email handling.
eM 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 and news client on GTK+ foundation featuring quick performance, extensible plugins, secure protocols, advanced filtering, strong folder and contact management, lightweight design, powerful search, customizable interface, multi-language support, and encryption.
The powerful, full-featured Personal Information Manager for Windows offering Email, Synchronization, Portability, Network support, Android and iOS versions.
Canary can write your emails, prioritize what needs attention, silence spam & much more. Say hello to your Inbox Copilot!
Foxmail is a free POP3 and IMAP4 e-mail client in English and Chinese for Windows systems.
Scribe is a small portable email client with an intergrated contact database and calendar. It supports all the major internet mail protocols and uses international standards where possible. Scribe doesn't required installing or uninstalled and can be used from a removable...
An enterprise application server that integrates information into a single workspace, integrates also a full mail server
Mulberry is a powerful, easy to use electronic mail (email) and calendar program that allows you to send, access, and manage email and calendars. Mulberry also helps you manage other related information, such as contact information.
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