Open365 AlternativesOffice Suites & Email Clients like Open365
Open365 is described as 'The open source cloud with LibreOffice online - LibreOffice online + Seafile + KDE. Improve your productivity and communicate better with your team members. The world is moving forward. Welcome to the open source cloud!' and is a Office Suite in the office & productivity category. There are more than 25 alternatives to Open365 for a variety of platforms, including Windows, Web-based, Android, iPhone and Linux apps. The best Open365 alternative is LibreOffice, which is both free and Open Source. Other great apps like Open365 are ONLYOFFICE, Microsoft 365 Copilot, CryptPad and Apache OpenOffice.
- Office Suite
- Free • Open Source
- 51 LibreOffice alternatives
Comprehensive free office suite supporting word processing, advanced spreadsheets, dynamic presentations, vector drawings, math formulas, and robust database management. Fully compatible with major office formats across all operating systems, it offers extensive capabilities for personal or professional tasks.
License model
- Free • Open Source
Application types
Country of Origin
Germany
EU
Platforms
- Mac
- Windows
- Linux
- Android
- BSD
- Snapcraft
- Flathub
- PortableApps.com
- F-Droid
- Flatpak
- 71 ONLYOFFICE alternatives
Open-source office suite offering document, spreadsheet, and presentation editing with co-editing modes, plugin support, integration across 30+ services, robust security, and mobile access. Available in Community, Enterprise, and Home Server editions for versatile deployment.
License model
- Free Personal • Open Source
Application types
Country of Origin
Latvia
EU
Platforms
- Mac
- Windows
- Linux
- Online
- Android
- iPhone
- Android Tablet
- HUAWEI AppGallery
- iPad
- Self-Hosted
- AppImageHub
- Snapcraft
- Flathub
- Samsung Galaxy Store
- Software as a Service (SaaS)
- Flatpak
- Cloudron
- 49 Microsoft 365 Copilot alternatives
Office suite offering productivity tools, document creation, and collaboration. Features AI-enhanced editing, mobile app access to documents and shared workspaces. Formats include word processing, spreadsheets, presentations, and email services.
License model
- Freemium • Proprietary
Application types
Country of Origin
United States
Platforms
- Mac
- Windows
- Online
- Android
- iPhone
- Android Tablet
- HUAWEI AppGallery
- iPad
Top Microsoft 365 Copilot Features
- 71 CryptPad alternatives
CryptPad is a private-by-design alternative to popular office tools and cloud services. All the content stored on CryptPad is encrypted before being sent, which means nobody can access your data unless you give them the keys.
License model
- Freemium • Open Source
Application types
Country of Origin
France
EU
Platforms
- Self-Hosted
- Software as a Service (SaaS)
- 56 Apache OpenOffice alternatives
Apache OpenOffice is a leading open-source office suite that offers free applications for word processing, spreadsheet, presentations, graphics, databases and more. All data is stored in an open standard format, though Open Office can also read and write files from other common...
License model
- Free • Open Source
Application types
Country of Origin
United States
Platforms
- Mac
- Windows
- Linux
- BSD
- PortableApps.com
DiscontinuedLast major release was in 2014
Apache OpenOffice Features
- 126 Microsoft Outlook alternatives
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.
License model
- Paid • Proprietary
Application types
Country of Origin
United States
Platforms
- Mac
- Windows
- Online
- Android
- iPhone
- Android Tablet
- iPad
- Apple Watch
- Android Wear
Top Microsoft Outlook Features
- 52 WPS Office alternatives
A comprehensive, free office suite offering high compatibility across formats. Supports Android, iOS, Windows, Linux, macOS, and handles text, presentations, spreadsheets, and PDFs. Features document collaboration, multiple languages, strong privacy, and user support.
License model
- Freemium • Proprietary
Application types
Country of Origin
China
Platforms
- Mac
- Windows
- Linux
- Android
- iPhone
- Chrome OS
- Android Tablet
- iPad
Top WPS Office Features
- 189 OpenProject alternatives
Open source software that enhances team collaboration and productivity through features like Gantt charts, issue tracking, Scrum support, and document management. Supports classic, agile, or hybrid management styles while ensuring robust data protection and flexible task assignment.
License model
- Freemium • Open Source
Application types
Country of Origin
Germany
EU
Platforms
- Self-Hosted
- Software as a Service (SaaS)
- Cloudron
Top OpenProject Features
- 61 Claws Mail alternatives
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 Robustness and stability.
- 72 Apple Mail alternatives
There’s big news attached. The best way to manage email on a Mac, according to Apple.
License model
- Free • Proprietary
Application type
Country of Origin
United States
Platforms
- Mac
- iPhone
- iPad
- Online
- Apple Watch
- 47 Zoho alternatives
An all-in-one online office suite designed for businesses, featuring ad-free and privacy-first tools such as word processor, spreadsheet, presentation application, CRM, email/webmail, and hosted wiki. Enables easy real-time collaboration and integration across various platforms.
License model
- Paid • Proprietary
Application types
Country of Origin
India
Platforms
- Online
Zoho Features
- 173 EssentialPIM alternatives
The powerful, full-featured Personal Information Manager for Windows offering Email, Synchronization, Portability, Network support, Android and iOS versions.
License model
- Freemium • Proprietary
Application types
Country of Origin
Estonia
EU
Platforms
- Windows
- Android
- iPhone
EssentialPIM Features