Alternatives to Microsoft Office 365 for Self-hosting with any license

ONLYOFFICE

Open source productivity suite for managing documents, collaborative projects, and CRM.
- Very goodcompatibility with officeXML files Guest • Dec 2019
Freemium $ $ $ Open Source Mac Windows Linux Web Android ... iPhone Android Tablet iPad Self-Hosted
Compatible with Microsoft Office Collaborative Workspaces Multiple languages Nextcloud integration ... Works Offline Real time collaboration Excel User interface White-labeled Add a feature

267 Like
CryptPad

With CryptPad, you can make quick collaborative documents for taking notes and writing down ideas together.

Freemium $ $ $ Open Source Self-Hosted Software as a Service (SaaS)
Collaborative writing Apps with End-to-End Encryption Real time collaboration No registration required ... Notetaking Direct file uploading Encrypted Notes Encryption MarkDown support Multiple languages Privacy focused Real-time Real time collaboration Scheduling Writing tool WYSIWYG Support Add a feature

69 Like
Open365

The open source cloud with LibreOffice online - LibreOffice online + Seafile + KDE. Improve your productivity and communicate better with your team members. The world is...
- Discontinued
  The project seems to be no longer developed. Last commit on the GitHub repo was made on June 27th, 2016, but it can be still downloaded and installed.
Free Open Source Android Self-Hosted
Cloud sync Add a feature

28 Like
Kolab Community

Kolab Groupware is a secure, scalable, reliable, flexible, full-featured collaboration suite.

Freemium Open Source Linux Web Self-Hosted
CalDAV CardDAV Real time collaboration Support for WebDAV Add a feature

37 Like
Zimbra Collaboration Suite

Zimbra Collaboration is an open, secure collaboration tool for email, calendaring, tasks and more. With the most innovative web application available today, Zimbra...

Freemium Open Source Linux Web Self-Hosted
Active Directory integration ActiveSync Calendar Email Server ... Real time collaboration Team Collaboration Add a feature

28 Like
Kopano

Kopano puts an email, video meetings, calendaring, and file sharing solution within one single interface. Kopano helps you work smarter with people within and outside...

Freemium Open Source Mac Windows Linux Web Android ... iPhone Android Tablet Windows Phone iPad Self-Hosted Microsoft Office Outlook S/MIME Software as a Service (SaaS)
CalDAV File sharing Email Server Mobile Device Management ... On-premises software POP3 Support Real time collaboration Shared calendars Add a feature

27 Like
WikiSuite

The most comprehensive and integrated Free / Libre / Open Source enterprise software suite.

Free Open Source Linux Self-Hosted
Real time collaboration Add a feature

9 Like
Axigen

Axigen provides a multi-tenant, fully integrated, multi-platform, all-in-one email, calendaring and collaboration messaging solution. It grants extensive branding...

Commercial Mac Windows Linux BSD Self-Hosted ... Microsoft Office Outlook Software as a Service (SaaS)
Clustering Group collaboration Api API Integration ... CalDAV CardDAV Clustering Support Customizable Customizable branding Delegated Administration Support for Docker Email Archiving Flexible customizations Email Server Multiple languages Real time collaboration Shared calendars Shared folders White-labeled Add a feature

11 Like
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Hub

The Hub is an intelligent intranet portal and collaboration software that helps drive employee engagement, share news and resources, and communicate more effectively...

Commercial Mac Windows Linux Web Windows Mobile ... Android iPhone Android Tablet Windows Phone iPad Self-Hosted
Team Collaboration Group collaboration Active Directory integration Azure integration ... Blogging Client Portal Gmail integration Google Calendar integration Google Drive integration Office 365 integration Online collaboration Real time collaboration Single Sign-On Social network Add a feature

2 Like
Apache James

James stands for Java Apache Mail Enterprise Server! It has a modular architecture based on a rich set of modern and efficient components which provides at the end...

Free Open Source Mac Windows Linux Self-Hosted
JMAP Email Server SMTP Add a feature

1 Like