grommunio AlternativesMail Servers & Calendar Apps like grommunio
grommunio is described as '(formerly known as grammm) efficiently combines all requirements of modern, digital communication and collaboration' and is a Mail Server in the office & productivity category. There are more than 10 alternatives to grommunio for a variety of platforms, including Web-based, Linux, Self-Hosted, SaaS and Windows apps. The best grommunio alternative is Nextcloud Hub, which is both free and Open Source. Other great apps like grommunio are Kolab Community, Zimbra Collaboration Suite, Microsoft Exchange and Kopano.
- Mail Server
- Freemium • Open Source
- 51 Nextcloud Hub alternatives
Nextcloud is the most deployed on-premises file share and collaboration platform. Access & collaborate across your devices. As fully on-premises solution, Nextcloud Hub provides the benefits of online collaboration without the compliance and security risks.
License model
- Free • Open Source
Application types
Country of Origin
Germany
EU
Platforms
- Self-Hosted
- 47 Kolab Community alternatives
Kolab is entirely Free and Open Source Software (a.k.a. FOSS), and uses Open Standards. We’ll get to why this is important to us, and hope that it is important to you thereafter.
License model
- Freemium • Open Source
Application types
Country of Origin
Switzerland
Platforms
- Linux
- Online
- Self-Hosted
Kolab Community Features
- 44 Zimbra Collaboration Suite alternatives
Zimbra Collaboration is an open, secure collaboration tool for email, calendaring, tasks and more. With the most innovative web application available today, Zimbra boosts the productivity of users on any desktop and dramatically reduces TCO compared to legacy platform vendors.
License model
- Freemium • Open Source
Application types
Country of Origin
United States
Platforms
- Linux
- Online
- Self-Hosted
Zimbra Collaboration Suite Features
- 43 Microsoft Exchange alternatives
Exchange business-class email helps increase user productivity while protecting your data. Get it as a hosted service or run it on your servers.
License model
- Paid • Proprietary
Application type
Country of Origin
United States
Platforms
- Windows
- Online
- Self-Hosted
- Microsoft Office 365
Microsoft Exchange Features
- 22 Kopano alternatives
Kopano puts an email, video meetings, calendaring, and file sharing solution within one single interface.
License model
- Paid • Proprietary
Application types
Country of Origin
Netherlands
EU
Platforms
- Online
- Software as a Service (SaaS)
Kopano Features
Kolab Now provides a suite of intuitive apps in a user friendly environment to make your day to day online comms easier, smarter and most importantly; secure.
License model
- Paid • Open Source
Application types
Country of Origin
Switzerland
Platforms
- Online
- Software as a Service (SaaS)
- DAVx5
OpenChange aims to provide a portable Open Source implementation of Microsoft Exchange Server and Exchange protocols.
DiscontinuedLast release is from 2015
OpenChange Features
- 42 IceWarp alternatives
IceWarp integrates all communication & collaboration features in one unified solution. Available in cloud or for on-premises deployment, IceWarp is a great tool to share and exchange all information and ideas online, offline or via mobile devices.
License model
- Paid • Proprietary
Application types
Country of Origin
United States
Platforms
- Windows
- Linux
- Online
Top IceWarp Features
- 14 Kerio Connect alternatives
Kerio Connect makes email, calendars, contacts and task management easy and affordable. With Kerio Connect, you have immediate, secure access to your communications anytime, anywhere, on any device - without complexity or expensive overhead.
License model
- Paid • Proprietary
Application types
Country of Origin
United States
Platforms
- Mac
- Windows
- Linux
- Online
Kerio Connect Features
Online Collaboration with Chat and Online Office. Is developed as open source software in Germany, offered as free community version and as commercial version. Operation as self-hosted or as SaaS from the computer centre.
License model
- Freemium • Open Source
Application types
Country of Origin
Germany
EU
Platforms
- Linux
- Online
- Self-Hosted
- Software as a Service (SaaS)
EGroupware Features
Atmail webmail system offers a webmail client, email server platform and mailserver appliance for Linux, Unix and Windows.
License model
- Paid • Proprietary
Application types
Country of Origin
Australia
Platforms
- Linux
- Online
Atmail Email Server Features