Top 15 Open365 Alternative and Similar Softwares | Dec 2024

1. Cypht

Cypht is an Open Source webmail application written in PHP and JavaScript that speaks native IMAP, POP3, and SMTP. This is a third generation E-mail client from the developers of the Hastymail project.Cypht has an evolving feature set, and employs a modular design that provides an unprecedented level of site...... TpSort Score | 181,000,000

2. Gmail™ Notifier +

Gmail™ Notifier + is a handy and reliable addon designed to notify you about all incoming emails from your main gmail account.Note: Gmail is a trademark of Google Inc. This addon is an independent project and has no relationship to Gmail or Google Inc. The sole purpose of this addon...... TpSort Score | 281,000

3. N1

N1 is an email client designed to be friendly and easy to use but also powerful and highly extensible. It works "out of the box" with all the major email services like Gmail, Yahoo and iCloud and the lightweight interface and minimal design make it a breeze to work in.Being...... TpSort Score | 44,600,000

4. FossaMail

FossaMail is an Open Source, Mozilla Thunderbird -based mail, news and chat client for Windows and Linux, brought to you by the Pale Moon developers.FossaMail: Is built from source with compiler optimizations geared towards an as stable and smooth operation of the client as possible (Pale...... TpSort Score | 28,400,000

5. Microsoft Mail and Calendar

The Mail and Calendar apps help you stay up to date on your email, manage your schedule and stay in touch with people you care about the most. Designed for both work and home, these apps help you communicate quickly and focus on what’s important across all your accounts. Supports...... TpSort Score | 57,600,000

6. LibreOffice Viewer

LibreOffice is the best free office suite on the desktop, and is now available on Android as a native application. The software is backed by a dynamic community, represented by The Document Foundation, a not for profit entity based in Germany.LibreOffice Viewer also comes with a first preview of the...... TpSort Score | 9,770,000

7. Simpli

Simply provides a unified interface for managing email across multiple accounts, calendars, lists, notes and more....... TpSort Score | 264,000

8. Columba

Columba is an email client written in Java, featuring a user-friendly graphical interface with wizards and internalionalization support. It's a powerful mail management tool with features to enhance your productivity and communication....... TpSort Score | 3,300,000

9. MailMate

MailMate is an IMAP e-mail client for Mac OS X featuring extensive keyboard control, Markdown supported email composition, advanced search conditions and drill-down search links, equally advanced smart mailboxes, automatic signature handling, cryptographic encryption/signing (OpenPGP and S/MIME), tagging, multiple notification methods, alternative message viewer layouts including a widescreen layout, and...... TpSort Score | 28,500,000

10. InboxVudu

Spend 90% less time on e-mail. InboxVudu automatically understands your emails so you don't have to check your inbox 50 times a day. Get automatic reminders of the emails you need to act on - no fluff, just focus on the messages that actually matter....... TpSort Score | 186,000,000

11. OE Classic

The ultimate goal of OE Classic is to be an easy to use, fast, small and secure program with lots of power features and yet, easy to use for a beginner. Your data always belongs to you as it is stored in a public-domain format and there are no storage...... TpSort Score | 852,000

12. RunYourMeeting

Prepare for your meetingsSet an agenda, share it with your co-workers, upload files and read minutes from prior meetings in order to prepare for upcoming ones. Make your meetings actionableEasily assign action items and send all meeting participants their own personal to-do list. When action items are followed up you...... TpSort Score | 28,200,000

13. Spark E-mail

Smart Inbox automatically detects if an email is personal, a notification or a newsletter and groups it with similar emails for easy batch processing using beloved swipes. With just a glance, you can see if emails are important or just a product announcement from a service you've never used.We all...... TpSort Score | 87,800,000

14. Alpine

Alpine is a fast, easy to use email client that is suitable for both the inexperienced email user as well as for the most demanding of power users. Alpine is based on the Pine® Message System ( http://www.washington.edu/pine/ ), which was also developed at the University of Washington. Alpine can...... TpSort Score | 2,400,000

15. Email Insights for Microsoft Garage

Email Insights is a Microsoft Garage project, a lightweight email client to get to your emails faster. It provides guided search in the form of superfast autocomplete, spell correct and fuzzy name search which means that users do not have to type out everything.FEATURESLight-weight email application focused on search.Mix of...... TpSort Score | 3,750,000