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Slack

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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.

Unified Communications
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Market Share of Slack

Current Customer(s)

623650

Market Share (Est.)

87.64%

Ranking

#1

Top Competitors and Alternatives of Slack

The top three of Slack’s competitors in the Unified Communications category are monday.com with 2.52%, PBworks BusinessHub with 1.65%, Bitrix24 with 1.11% market share.

TechnologyDomainsMarket Share (Est.)Versus page
monday.com179442.52%Slack vs monday.com
PBworks BusinessHub117371.65%Slack vs PBworks BusinessHub
Bitrix2479341.11%Slack vs Bitrix24
Mitel71521.01%Slack vs Mitel
Cisco Collaboration52480.74%Slack vs Cisco Collaboration
MangoApps40250.57%Slack vs MangoApps
RingCentral37930.53%Slack vs RingCentral
Crestron36900.52%Slack vs Crestron
Slack enterprise28960.41%Slack vs Slack enterprise
Genesys PureCloud27270.38%Slack vs Genesys PureCloud
Five926940.38%Slack vs Five9
Front21150.30%Slack vs Front
3CX16970.24%Slack vs 3CX
8x8 Communications Platform16660.23%Slack vs 8x8 Communications Platform
Grasshopper15000.21%Slack vs Grasshopper
Talkdesk12550.18%Slack vs Talkdesk
Amdocs11580.16%Slack vs Amdocs
Jive Voice7840.11%Slack vs Jive Voice
Glia7630.11%Slack vs Glia
Dialpad7540.11%Slack vs Dialpad
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Popular Comparisons

Top Competitors and Alternatives of Slack

The top three of Slack’s competitors in the Unified Communications category are monday.com with 2.52%, PBworks BusinessHub with 1.65%, Bitrix24 with 1.11% market share.

Slack vs monday.com

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Slack vs PBworks BusinessHub

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Slack vs Bitrix24

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Slack vs Mitel

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Slack vs Cisco Collaboration

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Slack vs MangoApps

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Slack vs RingCentral

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Slack vs Crestron

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Customers of Slack

Around the world in 2025, over 623650 companies have started using Slack as Unified Communications tool.

CustomersEmployee RangeCityRegionCountrySocial Links
Salesforce10,000+San FranciscoCaliforniaUnited States
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University Of Waterloo10,000+WaterlooOntarioCanada
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WeTest.net10,000+ShanghaiShanghaiPeople's Republic of China
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Stanford University10,000+StanfordCaliforniaUnited States
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IEEE Circuits and Systems Society (CASS)10,000+PiscatawayNew JerseyUnited States
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NASA - National Aeronautics & Space Administration10,000+Washington, D.C.Washington, D.C.United States
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Friends of OpenJDK (Foojay.io)10,000+SunnyvaleCaliforniaUnited States
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Enyata10,000+LagosLagosNigeria
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STEMINIST / СТЕМІНІСТ 🇺🇦 Non-governmental organization10,000+DniproDniproUkraine
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Going Forward Into Employment (GFIE)10,000+LondonEnglandUnited Kingdom
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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 (10615), Digital Marketing (8362), Social Media (7708).

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 (217777 companies), 100 - 249 employees (156129 companies), 0 - 9 employees (107570 companies).

Employee Size

Slack Customers by Geography

The top three geographies of Slack for unified-communications are the United States with 331330(65.48%), United Kingdom with 44556(8.81%), Canada with 28023(5.54%) customers respectively.

Customers

Employees of Slack

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Also see other Products/Services by Slack in:

File Sharing
Internal Communications
Instant Messaging And Chat
Communication
Productivity

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, PBworks BusinessHub, Bitrix24. 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 PBworks BusinessHub Slack vs Bitrix24.

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What is Slack customer distribution based on company size?

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What is Slack market share in the unified-communications?

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What are the top countries that use Slack?

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What are the top industries that use Slack?

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