Slack
Slack is a single workspace that connects users with the people and tools they work with everyday, no matter where they are what they do.
Market Share of Slack
Current Customer(s)
615369
Market Share (Est.)
83.30%
Ranking
#1
Top Competitors and Alternatives of Slack
The top three of Slack’s competitors in the Unified Communications category are monday.com with 3.19%, Mitel with 1.61%, PBworks BusinessHub with 1.58% market share.
| Technology | Domains | Market Share (Est.) | Versus page |
|---|---|---|---|
| monday.com | 23591 | 3.19% | Slack vs monday.com |
| Mitel | 11912 | 1.61% | Slack vs Mitel |
| PBworks BusinessHub | 11683 | 1.58% | Slack vs PBworks BusinessHub |
| Bitrix24 | 9725 | 1.32% | Slack vs Bitrix24 |
| Cisco Collaboration | 9403 | 1.27% | Slack vs Cisco Collaboration |
| Crestron | 6349 | 0.86% | Slack vs Crestron |
| RingCentral | 5358 | 0.73% | Slack vs RingCentral |
| 3CX | 4124 | 0.56% | Slack vs 3CX |
| MangoApps | 3993 | 0.54% | Slack vs MangoApps |
| Genesys PureCloud | 3645 | 0.49% | Slack vs Genesys PureCloud |
| Five9 | 3588 | 0.49% | Slack vs Five9 |
| Slack enterprise | 3176 | 0.43% | Slack vs Slack enterprise |
| 8x8 Communications Platform | 3059 | 0.41% | Slack vs 8x8 Communications Platform |
| Front | 2737 | 0.37% | Slack vs Front |
| Grasshopper | 2556 | 0.35% | Slack vs Grasshopper |
| Amdocs | 2032 | 0.28% | Slack vs Amdocs |
| Talkdesk | 1999 | 0.27% | Slack vs Talkdesk |
| Asterisk | 1234 | 0.17% | Slack vs Asterisk |
| Dialpad | 1154 | 0.16% | Slack vs Dialpad |
| BroadSoft | 932 | 0.13% | Slack vs BroadSoft |
Popular Comparisons
Top Competitors and Alternatives of Slack
The top three of Slack’s competitors in the Unified Communications category are monday.com with 3.19%, Mitel with 1.61%, PBworks BusinessHub with 1.58% market share.
Slack vs monday.com
Slack vs Mitel
Slack vs PBworks BusinessHub
Slack vs Bitrix24
Slack vs Cisco Collaboration
Slack vs Crestron
Slack vs RingCentral
Slack vs 3CX
Customers of Slack
Around the world in 2025, over 615308 companies have started using Slack as Unified Communications tool.
| Customers | Employee Range | City | Region | Country | Social Links |
|---|---|---|---|---|---|
| IBM | 10,000+ | Armonk | New York | United States |     |
| HelloFresh | 10,000+ | Berlin | Berlin | Germany | |
| Yale University | 10,000+ | New Haven | Connecticut | United States | |
| OWASP | 10,000+ | Bel Air | Maryland | United States | |
| U.S. Census Bureau | 10,000+ | Washington, D.C. | Washington, D.C. | United States | |
| ACM India | 10,000+ | New York City | New York | United States | |
| Germany Bank | 10,000+ | Wuhan | Hubei | People's Republic of China | |
| TOTVS | 10,000+ | Sao Paulo | Sao Paulo | Brazil | |
| Government Digital Service | 10,000+ | London | England | United Kingdom | |
| Northeastern SGA | 10,000+ | Boston | Massachusetts | United States | |
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Slack Customers by Products and Services
The top three products and services offering customers that use Slack for Unified Communications are Marketing (10444), Digital Marketing (8233), Social Media (7577).
Customers
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Slack Customers by Employee Size
The majority of Slack's customers for the unified-communications category fall in the company size of 20 - 49 employees (213257 companies), 100 - 249 employees (149123 companies), 0 - 9 employees (99124 companies).
Employee Size
Slack Customers by Geography
The top three geographies of Slack for unified-communications are the United States with 329560(65.76%), United Kingdom with 43768(8.73%), Canada with 27613(5.51%) customers respectively.
Customers
Employees of Slack
Also see other Products/Services by Slack in:
FAQ
Find answers to the most often asked questions by users.
Who are the top Slack competitors?
Slack’s Top competitors in the unified-communications category are monday.com, Mitel, PBworks BusinessHub. You can view a full list of Slack competitors here. 6sense uses advanced data mining and AI algorithms to track customers and competitors of Slack and 40,000 other technologies on the internet. You can also compare Slack and its feature with top competitors here : Slack vs monday.com Slack vs Mitel Slack vs PBworks BusinessHub.
What is Slack customer distribution based on company size?
What is Slack market share in the unified-communications?
What are the top countries that use Slack?
What are the top industries that use Slack?
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