ABOUT SLACK
Slack is a team communication application providing services such as real-time messaging, archiving, and to search for modern teams. It offers one-on-one messaging, private groups, persistent chat rooms, and direct messaging as well as group chats organized by topic.
Top competitors of Slack in Datanyze Universe 
| Top Competitors | Websites | Market Share | Vendor |
|---|---|---|---|
| Microsoft Exchange Server | 23,570 | 30.96% | Microsoft |
| Microsoft SharePoint | 20,084 | 26.38% | Microsoft |
| Confluence | 3,290 | 4.32% | Atlassian |
| Microsoft SharePoint Online | 3,159 | 4.15% | Microsoft |
| Microsoft Teams | 2,517 | 3.31% | Office 365 |
| Microsoft Sharepoint 2013 | 2,392 | 3.14% | Microsoft |
| Podio | 2,012 | 2.64% | Citrix |
| Yammer | 1,874 | 2.46% | Microsoft |
| Microsoft Exchange Server 2010 | 1,818 | 2.39% | Microsoft |
| CalendarWiz | 1,483 | 1.95% | Calendar |
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