Alternatives to Open365 for all platforms with any license

Platforms

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  • Apple Mail icon

    Apple Mail

    There’s big news attached. The best way to manage email on a Mac gets even better with OS X Yosemite.

    Free Mac iPhone iPad

    No features added Add a feature
  • Evolution icon

    Evolution

    Evolution is the official personal information manager and workgroup information management tool for GNOME. It combines e-mail, calendar, address book, and task list management functions. It has been an official part of GNOME since...

    Open Source Linux BSD GNOME

  • Claws Mail icon

    Claws Mail

    Claws Mail is an email client (and news reader), based on GTK+, featuring Quick response Graceful, and sophisticated interface Easy configuration, intuitive operation Abundant features Extensibility ...

    Open Source Windows Linux BSD Xfce

  • EssentialPIM icon

    EssentialPIM

    EssentialPIM lets you manage appointments, tasks, notes, contacts, password entries and email messages across multiple devices and cloud applications. PIM stands for Personal Information Manager, and it allows you to keep all you...

    Freemium Windows Android iPhone

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  • Polaris Office icon

    Polaris Office

    Description *Polaris Office is a free office app for documents, spreadsheets, presentations and Adobe PDF files. Polaris Office's document creation, editing, and saving features are all available without a network connection! ...

    Freemium Windows Android iPhone Android Tablet iPad Kindle Fire

    No features added Add a feature
  • Kontact - KMail icon

    Kontact - KMail

    KMail is the email component of Kontact, the integrated personal information manager of KDE. Kontact is a personal information manager and groupware software suite for KDE. It supports calendars, contacts, notes, to-do lists, news...

    Open Source Mac Windows Linux BSD

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  • MobiSystems OfficeSuite  icon

    MobiSystems OfficeSuite

    MobiSystems OfficeSuite is a complete mobile office solution, allowing you to create, view and edit Word, Excel and PowerPoint files away from your office. The new version 5 of the MobiSystems OfficeSuite has been especially enhanced...

    Commercial Android iPhone iPad

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  • ThinkFree Office icon

    ThinkFree Office

    ThinkFree Office is a Web-based, server hosted office suite that allows users to create, edit and share word processing, spreadsheet, and presentation files anytime, anywhere. ThinkFree Office is a MS Office-compatible...

    Freemium Web / Cloud Windows Mobile Android iPhone Android Tablet

    No features added Add a feature

Open365 Comments

Probably discontinued

Comment by mll
about Open365 20 hours ago

The website says :

The beta is closed.

Thanks for participating in the Demo!

If you want to setup your own server check out: Open365

Even though I had a beta account, the desktop app doesn't sync any more. So I guess the hosted app may have been closed.

As for the self-hosted app that's available on GitHub, the latest commit dates from 27 Jun 2016.

On Twitter, open365's last tweet dates from 19 Jul 2016, Open365 support's last tweet dates from 31 Aug 2016.
I also found a couple of unsourced tweets that talk about the service's discontinuation : https://twitter.com/jfeasm/status/793458726653009920, https://twitter.com/jamesmb/status/801320425703804929

I'd still like to find an official announcement about the discontinuation before editing AlternativeTo. (And I'd also like to know why it happened, the service looked promising.)

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