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)
597036
Market Share (Est.)
6.43%
Ranking
#3
Top Competitors and Alternatives of Slack
The top three of Slack’s competitors in the Communication category are Breezy HR with 63.64%, Whatsapp Business with 14.22%, Microsoft Office 365 with 5.36% market share.
| Technology | Domains | Market Share (Est.) | Versus page |
|---|---|---|---|
| Breezy HR | 5906380 | 63.64% | Slack vs Breezy HR |
| Whatsapp Business | 1319755 | 14.22% | Slack vs Whatsapp Business |
| Microsoft Office 365 | 497181 | 5.36% | Slack vs Microsoft Office 365 |
| Outreach | 273313 | 2.94% | Slack vs Outreach |
| Intercom | 165242 | 1.78% | Slack vs Intercom |
| Quip | 73027 | 0.79% | Slack vs Quip |
| Agile CRM | 40934 | 0.44% | Slack vs Agile CRM |
| Skype | 39798 | 0.43% | Slack vs Skype |
| Asana | 32011 | 0.34% | Slack vs Asana |
| Twilio | 22429 | 0.24% | Slack vs Twilio |
| Avaya | 20684 | 0.22% | Slack vs Avaya |
| GoToWebinar | 17979 | 0.19% | Slack vs GoToWebinar |
| Verizon | 16963 | 0.18% | Slack vs Verizon |
| Ryver | 11119 | 0.12% | Slack vs Ryver |
| PBworks BusinessHub | 10962 | 0.12% | Slack vs PBworks BusinessHub |
| Canvas LMS | 10723 | 0.12% | Slack vs Canvas LMS |
| Recruiterbox | 10088 | 0.11% | Slack vs Recruiterbox |
| Bitrix24 | 10006 | 0.11% | Slack vs Bitrix24 |
| Mitel | 9531 | 0.10% | Slack vs Mitel |
| DonorPerfect | 8612 | 0.09% | Slack vs DonorPerfect |
Popular Comparisons
Top Competitors and Alternatives of Slack
The top three of Slack’s competitors in the Communication category are Breezy HR with 63.64%, Whatsapp Business with 14.22%, Microsoft Office 365 with 5.36% market share.
Slack vs Breezy HR
Slack vs Whatsapp Business
Slack vs Microsoft Office 365
Slack vs Outreach
Slack vs Intercom
Slack vs Quip
Slack vs Agile CRM
Slack vs Skype
Customers of Slack
Around the world in 2026, over 596656 companies have started using Slack as Communication tool.
| Customers | Employee Range | City | Region | Country | Social Links |
|---|---|---|---|---|---|
| Mastercard | 10,000+ | Purchase | New York | United States |     |
| DENSO | 10,000+ | Kariya | Aichi | Japan | |
| Infosys Ltd | 10,000+ | Bengaluru | Karnataka | India | |
| The GEO Group, Inc. | 10,000+ | Boca Raton | Florida | United States | |
| Camping World | 10,000+ | Lincolnshire | Illinois | United States | |
| Yıldız Holding | 10,000+ | Istanbul | Istanbul | Turkey | |
| NCS Group | 10,000+ | Singapore | Central Singapore | Singapore | |
| University Of Toulouse III - Paul Sabatier | 10,000+ | Toulouse | Occitanie | France | |
| Stagwell | 10,000+ | New York City | New York | United States | |
| GE | 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 Communication are Marketing (10402), Digital Marketing (8210), Social Media (7515).
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 (205496 companies), 100 - 249 employees (149009 companies), 0 - 9 employees (92839 companies).
Employee Size
Slack Customers by Geography
The top three geographies of Slack for communication are the United States with 321749(66.16%), United Kingdom with 42113(8.66%), Canada with 26813(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 communication category are Breezy HR, Whatsapp Business, Microsoft Office 365. 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 Breezy HR Slack vs Whatsapp Business Slack vs Microsoft Office 365.
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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