Launched publicly in 2013, and within a year, Slack was listed as a Unicorn startup. By 2015, Slack had surpassed 1 million active users daily. Later, it gained further popularity during the COVID-19 pandemic, and its revenue crossed 902.6 million.
Salesforce quickly noticed its potential and acquired the company at $27.7 billion in 2020 to expand its software suite and enterprise applications.
I have compiled the latest facts and figures related to Slack, its users, usage, revenue, valuation, and more to provide further updates about Slack.
Slack Statistics 2024: At A Glance
- Slack has 65 million monthly active users, this number is set to reach 79 million in 2025.
- The platform currently has 38.8 million daily active users, this number is set to reach 47.2 million in 2025.
- Slack generated a revenue of $902.6 million in 2020 and is estimated to generate $4.22 billion by 2025.
- More than 750,000 organizations use Slack.
- 77% of the Fortune 100 companies use Slack.
- Slack has 200,000 paid users.
- The Slack startup is currently valued at $26.51 billion.
- Slack has a market share of 18% in the business communications software market.
- Teams that use Slack are 47% more productive.
- More than 2,545 employees work at Slack.
About Slack
| Launch Date | 14 August 2013 |
| Founder | Stewart Butterfield (co-founder, CEO), Cal Henderson (co-founder, CTO) |
| Headquarters | San Francisco, California |
| Parent Company | Salesforce |
| Daily active users (estimated) | 32.3 million (Estimates) |
| Monthly active users (estimated) | 54.1 million (Estimates) |
| Paid Consumers | 200,000 |
| Revenue generated | $902.6 million |
| Valuation | $27.7 billion |
| Number of Employees | 2,545 |
How Many People Use Slack?
The number of people using Slack has grown tremendously over the past years. The huge growth in this number was recorded during the pandemic, which led to the app’s growth. Let’s take a look at the number of people worldwide who use Slack.
Slack Has 38.8 Million Daily Active Users
Meanwhile, the number of daily active users in 2019 was reported to be $8.7 million.
Slack is estimated to have over 47 million daily active users by 2025.
These estimates are based on the daily active users recorded over the past years.
The following table displays the daily active users of Slack 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 65 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 made by Statista, the monthly active users of Slack are estimated to reach 79 million by the end of 2025.
The following table displays the number of monthly active Slack users.
| Year | Monthly active users of Slack |
|---|---|
| 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 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 Generated Annual Revenue Of $5,967 Million In 2023
In the 1st quarter of 2021, Slack generated a revenue of $273.4 million. This was a 36% year-over-year increase in revenue.
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 the latest earning report released by Salesforce, Slack contributed 12% to the total salesforce revenue generated in the 2nd quarter of 2023.
Here is a table showing Slack’s revenue over the years:
| Fiscal Year | Revenue Generated By Slack |
|---|---|
| 2023* | $5,967 million |
| 2022* | $4,509 million |
| 2021* | $3,324 million |
| 2020 | $902.6 million |
| 2019 | $630.4 million |
| 2018 | $400.6 million |
| 2017 | $221 million |
| 2016 | $200 million |
| 2015 | $100 million |
| 2014 | $30 million |
| 2013 | $12 million |
*Note: After Salesforce acquired Slack, slack’s 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 Organizations
The number of organizations using Slack increased tremendously over the past years which led to the 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 |
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 customers 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
Slack is usually used for productivity and communicating with team members. Let’s take a look at some of the facts and figures related to the slacks usage.
Users Spend Over 90 Minutes Actively Working On Slack Each Day
On average, 5 billion actions like sending messages, commenting on documents, building custom apps, etc, 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. According to Slack, using the app reduced emails by 32% and meetings by 27%.
Additionally, Slack reduced the support tickets by 2,500 per week. More than 3,800 queries per week are handled smoothly by the Slack API integrations.
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 the productivity of their team member after adopting the usage of Slack.
Besides, the companies using Slack can bring their products to the 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 (2024)
Slack Valuation increased tremendously between 2018 and 2019. Today, the app is valued at over $26 billion. Here are further details about the Slack Valuation recorded.
Slack Is Valued At $26.51 Billion As of 2024
This makes Slack the 730th most valued company globally as per market cap.
The following table displays Slack’s valuation over the past years.
| Year | Valuation Of Slack |
|---|---|
| 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 years since the pandemic spread.
Nearly 1 in 5 people prefer Slack for Collaborations and Communications.
Slack Has A Market Share Of 18% As of 2024
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 Share Point are Slack’s top competitors. They offer services similar to that 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 | 54.1 million |
| Market Share | 5.57% | 17.49% |
| Revenue | Over $8 billion | $273.4 million |
The following table displays the number of Daily active users of Slack 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 Statistics
In the year 2009, Slack employed around 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, besides its headquarters in America.
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.
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