Slack
Slack is a single workspace that connects users with the people and tools they work with everyday, no matter where they are or what they do.
Market Share of Slack
Current Customer(s)
637637
Market Share (Est.)
24.25%
Ranking
#2
Top Competitors and Alternatives of Slack
The top three of Slack’s competitors in the Communication category are Whatsapp Business with 36.29%, Microsoft Office 365 with 16.20%, Intercom with 5.12% market share.
| Technology | Domains | Market Share (Est.) | Versus page |
|---|---|---|---|
| Whatsapp Business | 954215 | 36.29% | Slack vs Whatsapp Business |
| Microsoft Office 365 | 425793 | 16.20% | Slack vs Microsoft Office 365 |
| Intercom | 134514 | 5.12% | Slack vs Intercom |
| Quip | 80573 | 3.06% | Slack vs Quip |
| Agile CRM | 44104 | 1.68% | Slack vs Agile CRM |
| Skype | 29865 | 1.14% | Slack vs Skype |
| Asana | 20552 | 0.78% | Slack vs Asana |
| GoToWebinar | 20181 | 0.77% | Slack vs GoToWebinar |
| Twilio | 19056 | 0.72% | Slack vs Twilio |
| Avaya | 14342 | 0.55% | Slack vs Avaya |
| Verizon | 12985 | 0.49% | Slack vs Verizon |
| Ryver | 12910 | 0.49% | Slack vs Ryver |
| PBworks BusinessHub | 12062 | 0.46% | Slack vs PBworks BusinessHub |
| Recruiterbox | 11112 | 0.42% | Slack vs Recruiterbox |
| Canvas LMS | 10922 | 0.42% | Slack vs Canvas LMS |
| Breezy HR | 9890 | 0.38% | Slack vs Breezy HR |
| DonorPerfect | 9194 | 0.35% | Slack vs DonorPerfect |
| Bitrix24 | 8094 | 0.31% | Slack vs Bitrix24 |
| Mitel | 7356 | 0.28% | Slack vs Mitel |
| ON24 | 7322 | 0.28% | Slack vs ON24 |
Popular Comparisons
Top Competitors and Alternatives of Slack
The top three of Slack’s competitors in the Communication category are Whatsapp Business with 36.29%, Microsoft Office 365 with 16.20%, Intercom with 5.12% market share.
Slack vs Whatsapp Business
Slack vs Microsoft Office 365
Slack vs Intercom
Slack vs Quip
Slack vs Agile CRM
Slack vs Skype
Slack vs Asana
Slack vs GoToWebinar
Customers of Slack
Around the world in 2025, over 623805 companies have started using Slack as Communication tool.
| Customers | Employee Range | City | Region | Country | Social Links |
|---|---|---|---|---|---|
| Maticmind S.P.A. | 10,000+ | Milan | Lombardy | Italy |    |
| Purina | 10,000+ | St. Louis | Missouri | United States |  |
| Kelley School of Business MS in Information Systems (MSIS) | 10,000+ | Bloomington | Indiana | United States | |
| Macquarie Group | 10,000+ | Sydney | New South Wales | Australia | |
| Windesheim | 10,000+ | Zwolle | Overijssel | Netherlands | |
| Xerox | 10,000+ | Norwalk | Connecticut | United States | |
| SAS Group | 10,000+ | Solna | Stockholm | Sweden | |
| Goodwill Industries International | 10,000+ | Rockville | Maryland | United States | |
| Society Of Petroleum Engineers | 10,000+ | Houston | Texas | United States | |
| MPFT Digital (NHS) | 10,000+ | Stafford | England | United Kingdom | |
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Slack Customers by Products and Services
The top three products and services offering customers that use Slack for Communication are Marketing (10623), Digital Marketing (8369), Social Media (7711).
Customers
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Slack Customers by Employee Size
The majority of Slack's customers for the communication category fall in the company size of 20 - 49 employees (217845 companies), 100 - 249 employees (156176 companies), 0 - 9 employees (107574 companies).
Employee Size
Slack Customers by Geography
The top three geographies of Slack for communication are the United States with 331400(65.48%), United Kingdom with 44576(8.81%), Canada with 28029(5.54%) 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 communication category are Whatsapp Business, Microsoft Office 365, Intercom. 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 Whatsapp Business Slack vs Microsoft Office 365 Slack vs Intercom.
What is Slack customer distribution based on company size?
What is Slack market share in the communication?
What are the top countries that use Slack?
What are the top industries that use Slack?
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