Slack has become a powerhouse in workplace collaboration with an estimated 47.2 million daily users and 79 million monthly active users in 2025.
This growth is remarkable, considering there were just 8.7 million daily users in 2019. More than 750,000 organizations utilize Slack, and 77% of Fortune 100 companies have adopted the platform.
Our latest Slack Statistics data highlights revenue growth, users, traffic, and more.
Slack Statistics 2026: At A Glance
- Slack has 47.2 million daily active users (DAU).
- Slack MAU is estimated to be 79 million.
- In 2023, Slack reported revenue of $1.7 billion.
- More than 750,000 organizations use Slack.
- Slack has 200,000 paid customers.
- The Slack startup is currently valued at $26.51 billion.
- Slack has a market share of 18% in the business communications software market.
- Slack received 118.7 million visitors in December 2025. Most of the traffic comes from USA, Japan, and India.
About Slack
| Launch Date | 14 August 2013 |
| Founder | Stewart Butterfield (co-founder), Cal Henderson (co-founder, CTO) |
| CEO | Denise Dresser |
| Headquarters | San Francisco, California |
| Parent Company | Salesforce |
| Daily active users (estimated) | 47.2 million |
| Monthly active users (estimated) | 79 million |
| Paid Consumers | 200,000 |
| Revenue generated | $902.6 million (Before Salesforce Acquisition) |
| Valuation | $27.7 billion |
| Number of Employees | 2,545 |
How Many People Use Slack?
Slack saw huge growth during the pandemic. Following this, the number of users preferring Slack is estimated to be 79 million.
Slack Recorded 38.8 Million Daily Active Users in 2024
Meanwhile, the number of Slack daily active users in 2019 was reported to be 8.7 million.
These estimates are based on the daily active users recorded over the past years.
The following table displays the Slack daily active users recorded over the years.
| Year | Daily Active Users Of Slack |
|---|---|
| 2025 | 47.2 million |
| 2024 | 38.8 million |
| 2023 | 32.3 million |
| 2022 | 25.7 million |
| 2021 | 19.2 million |
| 2020 | 12.6 million |
| 2019 | 8.7 million |
Source: Statista.
The Monthly Active Users of Slack Are Predicted To Be 79 Million
Comparatively, the number of monthly active Slack users worldwide in 2019 was reported to be 14.6 million.
The rise in monthly users of Slack is due to the rapid adoption of collaborative spaces that allow employees to connect and help teams collaborate on projects.
Further, according to the projections, the Slack monthly active users are estimated to reach 79 million by the end of 2025.
The following table displays the number of monthly active Slack users.
| Year | Slack Monthly Active Users |
|---|---|
| 2025* | 79 million |
| 2024 | 65 million |
| 2023 | 54.1 million |
| 2022 | 43.1 million |
| 2021 | 32.2 million |
| 2020 | 21 million |
| 2019 | 14.6 million |
Source: Statista.
Slack Revenue
Slack’s annual revenue in 2025 is estimated to reach $6.98 billion, up from $1.7 billion in 2023.
Slack’s revenue doubled between 2017 and 2018. Later, it grew exponentially over the years. Let’s take a look at the revenue generated by Slack over the years.
Slack Annual Revenue Of $1.7 Billion Reported In 2023
Slack generated approximately $1.7 billion in revenue in FY2023, as part of Salesforce’s “Platform and Other” segment, following its 2021 acquisition.
In the first quarter of 2021, Slack generated revenue of $273.4 million, a 36% year-over-year increase.
Slack’s peak revenue was recorded in 2020. At this time, most of the companies were working remotely, which led to an increased usage of collaborative software.
Further, according to Salesforce’s latest earnings report, Slack contributed 12% of the total revenue generated in the second quarter of 2023.
Here is a table showing Slack’s revenue over the years:
| Fiscal Year | Revenue Generated By Slack |
|---|---|
| 2023* | $1.7 billion |
| 2022* | $1.5 billion |
| 2021* | $902 million |
| 2020 | $630 million |
| 2019 | $401 million |
| 2018 | $221 million |
| 2017 | $221 million |
| 2016 | $100 million |
| 2015 | $30 million |
| 2014 | $12 million |
*Note: After Salesforce acquired Slack, its revenue is included in Salesforce’s “Platform and Other” segment. The slack revenue for the years 2021 to 2023 is actually the revenue of the Salesforce “platform and others.”
Source: Business of Apps, Salesforce, Statista.
Slack Revenue Growth Breakdown
Slack’s growth has abruptly declined from 46% year-over-year in Q3 fiscal 2023 to only 19% in Q3 fiscal 2025.
Here is the table for Slack’s revenue growth for Fiscal Year 2023 (FY23) to Fiscal Year 2025:
| Year | Growth |
|---|---|
| FY 2025 Q3 | 19% |
| FY 2025 Q2 | 17% |
| FY 2025 Q1 | 17% |
| FY 2024 Q4 | 16% |
| FY 2024 Q3 | 18% |
| FY 2024 Q2 | 16% |
| FY 2024 Q1 | 20% |
| FY 2023 Q4 | 33% |
| FY 2023 Q3 | 46% |
Source: Salesforce
Slack Organizations
The number of organizations using Slack increased tremendously over the past years, which led to a decline in its user count. Here are further details about the number of Organizations that use Slack.
Over 750,000 Organizations Use Slack
200% year-over-year growth is recorded in the number of organizations using Slack.
According to the latest report released by Slack, the platform is used by over 100K organizations.
The report further adds that nearly 80% of the Fortune 100 companies use Slack.
Some of the large companies that use Slack are IBM, Amazon, Airbnb, and PayPal.
However, the majority of 750,000 organizations are unpaid Slack customers.
The following table displays the number of organizations that have used Slack over the past years.
| Year | Number Of Organizations Using Slack |
|---|---|
| 2020 | 750,000 |
| 2019 | 640,000 |
| 2018 | 450,000 |
| 2017 | 330,000 |
| 2016 | 200,000 |
| 2015 | 60,000 |
| 2014 | 30,000 |
Note: This is the last recorded data. Data after 2020 haven’t been disclosed by Salesforce or Slack.
Source: Statista, Slack.
Slack Has 200,000 Paid Customers
This is an increase of 39% year-over-year growth in the number of paid users compared to the previous year.
The number of paying accounts of Slack jumped from 112,000 to 156,000 between 2020 and 2021.
This increase in the number was due to the widespread adoption of remote work worldwide. As a result, large enterprises were prompted to purchase the paid version to access the platform’s premium features.
However, after the changes in the scenario, most of the paying consumers did not back off as they noticed smoothness in their communication and other tasks.
Here are further details about the number of paying consumers of Slack over the years.
| Year | Paying Customers |
|---|---|
| 2023 | 200,000 |
| 2022 | 169,000 |
| 2021 | 156,000 |
| 2020 | 112,000 |
| 2019 | 88,000 |
| 2018 | 60,000 |
| 2017 | 50,000 |
Source: Business of Apps, Slack, LinkedIn.
Slack Usage Statistics
As of 2025, Slack’s daily active users stand at 40 to 48 million. Additionally, 200,000+ paying organizations use it in over 150 countries. It’s integrated with 2,400+ apps and services. Here are some usage stats in depth:
Users Spend Over 90 Minutes Actively Working On Slack Each Day
On average, 5 billion actions, such as sending messages, commenting on documents, and building custom apps, are completed weekly on Slack.
More than 1 billion of these actions take place on mobile devices.
Besides, every weekday, Slack crosses one billion usage minutes.
Slack users spend approximately 9 hours signed in on Slack on weekdays.
Source: Slack.
More Than 1.5 Billion Messages Are Sent Daily On Slack
87% of Slack users reported that conversations on Slack improved the quality of communication in their organization.
Besides, 74% of Slack users send messages through public channels.
With the help of Slack, enterprises witnessed a 13% increase in the number of arranged contracts. Slack said using the app reduced emails by 32% and meetings by 27%.
Additionally, Slack reduced the support tickets by 2,500 per week. The Slack API integrations smoothly handle more than 3,800 queries per week.
Teams That Use Slack Are 47% More Productive
515 organizations reported that after adopting the usage of Sack, their team’s productivity has increased by 40% to 20%.
However, 144 organizations said that they saw no increase in their team members’ productivity after adopting Slack.
Additionally, companies using Slack can bring their products to market 23% faster than others.
The following table displays the number of organizations that reported an increase in their productivity percentage after adapting to the usage of Slack.
| Percentage Increase In Productivity | Number Of Organizations |
|---|---|
| More than 100% | 33 |
| 100% to 80% | 58 |
| 80% to 60% | 129 |
| 60% to 40% | 292 |
| 40% to 20% | 515 |
| 20% to 10% | 458 |
| No increase in productivity | 144 |
Source: Statista, Slack.
79% Of The Organizations Reported That Using Slack Improved The Culture Of Their Team
On the other hand, 10.6% of the organizations reported that they did not see any improvement in their team culture.
91% of the users reported that their ability to work remotely improved after adapting to Slack.
The following table displays the effect of Slack on the team culture of the organizations.
| Effect On Team Culture | Percentage Of Organizations |
|---|---|
| Improved team culture | 79% |
| No difference in the team culture | 10.6% |
| Don’t know if it affected the team culture | 10.4% |
Slack Valuation
Slack Valuation increased tremendously between 2018 and 2019. Today, the app is valued at over $26 billion. Here are further details about the recorded Slack market valuation.
Slack Is Currently Valued At $26.51 Billion
This makes Slack the 742nd most valuable company globally, as per market capitalization.
The following table displays Slack’s net worth over the past years.
| Year | Valuation Of Slack |
|---|---|
| 2024 | $26.51 billion |
| 2023 | $26.5 billion |
| 2020 | $27.7 billion |
| 2019 | $23 billion |
| 2018 | $7.1 billion |
| 2017 | $5 billion |
| 2016 | $3.8 billion |
| 2015 | $2.8 billion |
| 2014 | $1.1 billion |
Sources: Business of Apps, Techcrunch, Companies Market Cap.
Market Share Of Slack
The app has become quite popular over the past few years, particularly since the pandemic spread.
Nearly 1 in 5 people prefer Slack for Collaborations and Communications.
Slack Has A Market Share Of 18%
Microsoft Teams and Skype for Business are reported to be Slack’s biggest competitors.
Here are further details about the market share owned by different Business Communication Software worldwide:
| Collaborative Software | Market Share |
|---|---|
| Skype for Business | 53% |
| Microsoft Teams | 41% |
| Slack | 18% |
| Google Chat | 12% |
| Workplace from Meta | 1% |
Source: Businessdit.
Slack vs Microsoft Teams
Microsoft Teams and Microsoft SharePoint are Slack’s top competitors. They offer services similar to those of Slack.
However, Teams provides users with additional features of web conferencing and online meetings.
Let us look at the differences between Microsoft Teams and Slack.
| Parameters | Microsoft Teams | Slack |
|---|---|---|
| Monthly Active Users | 320 million | 79 million |
| Market Share | 5.57% | 18% |
| Revenue | Over $8 billion | $273.4 million |
The following table displays the number of Daily Slack active users and Microsoft Teams over the past years.
| Year | The Number Of Daily Active Users Of Microsoft | Number Of Daily Active Users Of Slack |
|---|---|---|
| 2023 | 280 million | 20 million |
| 2022 | 270 million | 18 million |
| 2021 | 145 million | 14 million |
| 2020 | 75 million | 12 million |
| 2019 | 20 million | 10 million |
| 2018 | 8 million | 8 million |
| 2017 | 2 million | 6 million |
Source: Companies Market Cap.
General Slack Stats
In 2009, Slack employed approximately 1,664 people. Later, Slack stated that they had 2,045 staff in 2020.
The majority of its employees work at the Slack headquarters in California. Slack has 11 offices in 7 countries worldwide, in addition to its headquarters in the United States.
It operates in New York City, Denver, Toronto, London, Paris, Tokyo, Dublin, Vancouver, Pune, and Melbourne.
Source: Slack, Wikipedia.
Slack Is Available In More Than 150 Countries
The application is available in 12 languages. Some of them are English, Spanish, French, Italian, Japanese, Korean, etc.
Source: Wikipedia, Slack.
Conclusion: Slack Has Over 47.2 Million Daily Active Users
Slack continues to thrive in 2025 with users across 150 countries and support for 12 languages. The average user stays signed in for more than 9 hours each day, exchanging over 1.5 billion messages daily.
Moreover, Slack has helped companies reduce emails by 32 percent and meetings by 27 percent. It also improved team culture in 79 percent of organizations and enhanced remote work effectiveness for 91 percent of users.
With a current valuation of 26.51 billion dollars and integration into Salesforce’s ecosystem, Slack is not just a messaging app but a critical tool for modern, high-performing organizations worldwide.
