grommunio Alternatives
grommunio is described as '(formerly known as grammm) efficiently combines all requirements of modern, digital communication and collaboration' and is a Calendar app in the office & productivity category. There are more than 10 alternatives to grommunio for a variety of platforms, including Online / Web-based, Linux, Self-Hosted solutions, Windows and SaaS. The best alternative is Nextcloud Hub, which is both free and Open Source. Other great apps like grommunio are Zimbra Collaboration Suite, Microsoft 365, Kolab Community and Kolab Now.
grommunio alternatives are mainly Mail Servers but may also be Team Collaboration Tools or Calendar Apps. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of grommunio.- Freemium • Open Source
- Calendar App
- Mac
- Windows
- Linux
- Online
- Android
- iPhone
- iPad
- Self-Hosted
Nextcloud Hub
Do you think this is a good alternative?YesNo- Free • Open Source
- Team Collaboration Tool
- Calendar App
53 alternatives to Nextcloud Hub- Self-Hosted
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.
Nextcloud Hub Features
Zimbra Collaboration Suite
Do you think this is a good alternative?YesNo- Freemium • Open Source
- Mail Server
- Calendar App
- Team Collaboration Tool
43 alternatives to Zimbra Collaboration Suite- Linux
- Online
- Self-Hosted
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.
Zimbra Collaboration Suite Features
Microsoft 365
Do you think this is a good alternative?YesNo- Paid • Proprietary
- Mail Server
- Project Management Tool
87 alternatives to Microsoft 365- Online
- Software as a Service (SaaS)
Microsoft 365 is a subscription-based software services that licenses Microsoft Office products for on-premise or cloud-based use.
Microsoft 365 Features
Kolab Community
Do you think this is a good alternative?YesNo- Freemium • Open Source
43 alternatives to Kolab Community- Linux
- Online
- Self-Hosted
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.
Kolab Community Features
Kolab Now
Do you think this is a good alternative?YesNo- Paid • Open Source
- Calendar App
- Mail Server
- Cloud Storage Service
78 alternatives to Kolab Now- Online
- Software as a Service (SaaS)
- DAVdroid
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.
Kolab Now Features
Kopano
Do you think this is a good alternative?YesNo- Paid • Open Source
- Mail Server
- Email Client
- Mobile Device Management (MDM) Tool
25 alternatives to Kopano- Mac
- Windows
- Linux
- Online
- Android
- iPhone
- Android Tablet
- Windows Phone
- iPad
- Self-Hosted
- Microsoft Office Outlook
- S/MIME
- Software as a Service (SaaS)
Kopano puts an email, video meetings, calendaring, and file sharing solution within one single interface.
Kopano Features
OpenChange
Do you think this is a good alternative?YesNo30 alternatives to OpenChange- Free • Open Source
- Mail Server
- Linux
OpenChange aims to provide a portable Open Source implementation of Microsoft Exchange Server and Exchange protocols.
OpenChange Features
Microsoft Exchange Server
Do you think this is a good alternative?YesNo- Paid • Proprietary
- Mail Server
45 alternatives to Microsoft Exchange Server- Windows
- Online
Microsoft Exchange Server is a messaging and collaborative software product developed by Microsoft. It is part of the Microsoft Servers line of server products and is widely used by enterprises using Microsoft infrastructure solutions.
Microsoft Exchange Server Features
IceWarp
Do you think this is a good alternative?YesNo- Paid • Proprietary
- Team Collaboration Tool
- Group Chat App
- Mail Server
45 alternatives to IceWarp- Windows
- Linux
- Online
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.
IceWarp Features
Kerio Connect
Do you think this is a good alternative?YesNo- Paid • Proprietary
- Mail Server
- WebMail Provider
17 alternatives to Kerio Connect- Mac
- Windows
- Linux
- Online
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.
Kerio Connect Features