IceWarp
IceWarp integrates all communication & collaboration features in one unified solution.
17 Alternatives To IceWarp
Colabus
Colabus is an internet cloud based, flexible, powerful, and easy to use enterprise collaboration tool.
Creativity 365
Cross-device content creation suite
G Suite
Google’s encompassing suite of cloud-based business apps.
Kerio Connect
KerioConnect is a commercial mail and groupware server.
LibreOffice
Free office suite, open source, and compatible with .doc, .docx, .xls, .xlsx, .ppt, .pptx files. Updated regularly – download for free. Originally based on OpenOffice.org.
MDaemon Messaging Server
Low cost, easy to use Email Server software for virtual, on-premise, or hosted deployments for…
Microsoft Exchange Server
Microsoft Exchange Server is a messaging and collaborative software product developed by Microsoft.
Microsoft Teams
Microsoft Teams provides the enterprise-level security, compliance and management features you expect from Office 365, including broad support for compliance standards, and eDiscovery and legal hold for channels, chats, and files.
ProtonMail
Secure email with absolutely no compromises. Get your free encrypted email account today.
Samepage
Easy to setup collaborative tool and file syncronization cloud application
Slack
A messaging app for teams who see through the Earth!
WordPerfect
Corel WordPerfect is an office suite for creating documents, presentations, spreadsheets and more.
Zimbra Collaboration Suite
Zimbra Collaboration is an open, secure collaboration tool for email, calendaring, tasks and more.
Zoho Mail
Zoho Mail is a webmail service built with the needs of a modern business in mind.
Zoho One
Zoho is an all-in-one online office suite.
iRedMail
A fully fledged, free email server solution, an open source project (GPL v2).
qmail
qmail is the name of an advanced level of mail transfer agent for the UNIX based operating systems.