IceWarp is described as 'All-in-one European business email and collaboration platform — email, chat, video conferencing, and office suite in one app. Cloud or self-hosted' and is a team collaboration tool in the office & productivity category. There are more than 25 alternatives to IceWarp for a variety of platforms, including Web-based, Linux, Windows, Mac and Android apps. The best IceWarp alternative is Slack, which is free. Other great apps like IceWarp are Google Workspace, Nextcloud Hub, Ripcord and Infomaniak kSuite.
Low cost, easy to use Email Server software for virtual, on-premise, or hosted deployments for companies that want control of their email. Integrated web-mail with doc sharing, Drop Box integration, client and server side encryption.
United Kingdom
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.
United States
OBM is a free messaging and collaboration platform useful for just a couple to many thousands of users with strong support for mobile devices.
ccGenie turns a mountain of emails, attachments, and links into an organized project so that you and your team can quickly find information and take action.
United States
Fast open source Slack desktop app, written in Node.js with native UI powered by the Yue library.
Atmail webmail system offers a webmail client, email server platform and mailserver appliance for Linux, Unix and Windows.
Australia
Turnkey Solutions for the Enterprise Cloud
Installation, Configuration, and Management tools for enterprise email, collaboration, messaging, video conferencing, file sharing, and file transfers.
Australia
LeggoChat is a group or channel based chat platform that is designed to be easy to set up for any casual, or formal settings and discussions. Users can choose to have their messages logged and stored, or otherwise. No user accounts are required to get started at all.
HyperOffice has been designed for growing businesses looking for collaboration features minus the costs and complexity of setting up SharePoint. Users get most of SharePoints features - intranet/extranet workspaces, online document management, forums, polls, automated workflows...
Greenbox is a powerful, secure, and easy to use application-based document collaboration solution that converts your organization into a green & paperless workplace. It helps to Store, Track, Share and Manage the documents.
India
MailShogun is a plugin that creates domain emails easily. You can pick between your professional and regular e-mail address when sending or receiving from your regular g-mail account. One of the cheapest mail forwarding services you can find on the web.
