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)
373626
Market Share (Est.)
82.21%
Ranking
#1
Top Competitors and Alternatives of Slack
The top three of Slack’s competitors in the Unified Communications category are monday.com with 3.85%, Bitrix24 with 1.84%, Mitel with 1.62% market share.
| Technology | Domains | Market Share (Est.) | Versus page |
|---|---|---|---|
| monday.com | 17520 | 3.85% | Slack vs monday.com |
| Bitrix24 | 8353 | 1.84% | Slack vs Bitrix24 |
| Mitel | 7371 | 1.62% | Slack vs Mitel |
| PBworks BusinessHub | 6896 | 1.52% | Slack vs PBworks BusinessHub |
| Cisco Collaboration | 5487 | 1.21% | Slack vs Cisco Collaboration |
| RingCentral | 4155 | 0.91% | Slack vs RingCentral |
| Crestron | 3826 | 0.84% | Slack vs Crestron |
| Genesys PureCloud | 2842 | 0.63% | Slack vs Genesys PureCloud |
| Five9 | 2734 | 0.60% | Slack vs Five9 |
| MangoApps | 2536 | 0.56% | Slack vs MangoApps |
| Front | 2124 | 0.47% | Slack vs Front |
| 8x8 Communications Platform | 1812 | 0.40% | Slack vs 8x8 Communications Platform |
| 3CX | 1753 | 0.39% | Slack vs 3CX |
| Slack enterprise | 1555 | 0.34% | Slack vs Slack enterprise |
| Grasshopper | 1527 | 0.34% | Slack vs Grasshopper |
| Amdocs | 1183 | 0.26% | Slack vs Amdocs |
| Talkdesk | 1171 | 0.26% | Slack vs Talkdesk |
| Jive Voice | 817 | 0.18% | Slack vs Jive Voice |
| Dialpad | 793 | 0.17% | Slack vs Dialpad |
| Glia | 780 | 0.17% | Slack vs Glia |
Popular Comparisons
Top Competitors and Alternatives of Slack
The top three of Slack’s competitors in the Unified Communications category are monday.com with 3.85%, Bitrix24 with 1.84%, Mitel with 1.62% market share.
Slack vs monday.com
Slack vs Bitrix24
Slack vs Mitel
Slack vs PBworks BusinessHub
Slack vs Cisco Collaboration
Slack vs RingCentral
Slack vs Crestron
Slack vs Genesys PureCloud
Customers of Slack
Around the world in 2025, over 373619 companies have started using Slack as Unified Communications tool.
| Customers | Employee Range | City | Region | Country | Social Links |
|---|---|---|---|---|---|
| Musgrave | 10,000+ | Cork | Munster | Ireland |    |
| EnBW | 10,000+ | Karlsruhe | Baden-Wuerttemberg | Germany |  |
| NSG Group | 10,000+ | Ormskirk | England | United Kingdom | |
| Liteon | 10,000+ | Taipei | Taiwan | Taiwan | |
| Södra | 10,000+ | Vaexjoe | Kronoberg | Sweden | |
| Catalent | 10,000+ | Somerset | New Jersey | United States | |
| WeWork | 10,000+ | New York City | New York | United States | |
| U.S. Department Of Health & Human Services | 10,000+ | Washington, D.C. | Washington, D.C. | United States | |
| Guilford County Schools | 10,000+ | Greensboro | North Carolina | United States | |
| Omron Corporation | 10,000+ | Kyoto | Kyoto | Japan | |
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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 (8508), Digital Marketing (6903), Social Media (6595).
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 (123967 companies), 0 - 9 employees (72198 companies), 100 - 249 employees (70515 companies).
Employee Size
Slack Customers by Geography
The top three geographies of Slack for unified-communications are the United States with 175253(59.39%), United Kingdom with 31026(10.51%), Canada with 16749(5.68%) 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, Bitrix24, Mitel. 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 Bitrix24 Slack vs Mitel.
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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