Last updated
The closest alternatives to Slack are Mattermost, RocketChat and Discord. Slack generates $1.7B in revenue with 2.7K employees. Every one of the 20 alternatives below is compared with Slack on revenue, funding, customers, team size and founding year.
Slack is pinned as the first column so every figure is read against it. Blank cells are figures we have not verified, never zeros.
| Company |  SlackThis company |  Mattermost |  RocketChat |  Discord |  element.io |  Zoho |  Café |  Workhuman |  Telegram | Telegram |
|---|---|---|---|---|---|---|---|---|---|---|
| Revenue | $1.7B | $33.1M | $31.5M | $600M | $12.5M | $1.5B | $1.4B | $1.2B | $1B | $1B |
| Valuation | $27.7B | Not disclosed | Not disclosed | Not disclosed | Not disclosed | Not disclosed | Not disclosed | Not disclosed | Not disclosed | Not disclosed |
| Funding raised | $35.2B | $70M | $26.9M | $990.5M | Not disclosed | $7.3M | Not disclosed | $139.6M | Not disclosed | Not disclosed |
| Customers | 10M | Not disclosed | 12M | 140M | Not disclosed | 250K | Not disclosed | 280 | 500K | 500K |
| Team size | 2.7K | 156 | 176 | 3.5K | 114 | 24K | 9.2K | 1K | 1.8K | 1.8K |
| Founded | 2009 | 2016 | 2015 | 2015 | 2017 | 1996 | 2020 | 1999 | 2013 | 2013 |
| HQ | San Francisco, United States | United States | United States | United States | United Kingdom | India | France | United States | United Arab Emirates | United Arab Emirates |
United States · Team Collaboration Software
Mattermost.com is a company that provides an open-source messaging and collaboration platform for teams. Their platform enables teams to communicate and collaborate securely in real-time, while giving them full control…
United States · Team Collaboration Software
Rocket.Chat Technologies Corp is a company that provides a free and open-source team communication platform for businesses and organizations. The company was founded in 2015 and is headquartered in Porto Alegre, Brazil…
United States · Team Collaboration Software
Discord.com is owned by Discord Inc., a privately held American company headquartered in San Francisco, California. Discord is a popular communication platform designed for gamers, but it has since expanded to other…
United Kingdom · Team Collaboration Software
Element is a new type of communications platform. It combines consumer messaging apps, collaboration tools and video conferencing to replace email, address shadow IT and improve security. Of most importance, Element…
India · Team Collaboration Software
Zoho Corporation is a software company that provides cloud-based business management and productivity solutions. Zoho's product suite includes applications for CRM, email and collaboration, project management, finance…
United States · Team Collaboration Software
Workhuman is a technology company that provides a social recognition and continuous performance management platform. Its cloud-based software aims to help organizations create a more positive, inclusive, and productive…
United Arab Emirates · Team Collaboration Software
Developer of an instant messaging application intended to communicate easily. The company's cloud-based application includes group chatting, documents sharing, message encryption, cloud storage and message…
United Arab Emirates · Team Collaboration Software
Developer of an instant messaging application intended to communicate easily. The company's cloud-based application includes group chatting, documents sharing, message encryption, cloud storage and message…
France · Team Collaboration Software
iObeya is an enterprise platform that virtualizes meeting rooms dedicated to all Visual Management practices. It offers a unique, life-like and immersive user experience, unlocking the constraints of paper for a…
United States · Team Collaboration Software
Symphony is a leading provider of secure cloud-based communication and collaboration solutions for the enterprise. Its flagship product, Symphony, is a team collaboration platform that enables users to communicate and…
United States · Team Collaboration Software
Symphony is a leading provider of secure cloud-based communication and collaboration solutions for the enterprise. Its flagship product, Symphony, is a team collaboration platform that enables users to communicate and…
United States · Team Collaboration Software
Notion Labs, Inc. is the company that owns notion.so. It is a privately-held software company based in San Francisco, California, that provides a productivity and collaboration platform that allows users to create…
United States · Team Collaboration Software
Cognition AI is an applied AI lab focused on building end-to-end software agents that act as collaborative AI teammates.
United States · Team Collaboration Software
A platform to provide a seamless customer experience across AI and human support, delivering increased customer satisfaction while reducing costs.
China · Team Collaboration Software
Provider of cloud-based technology for data-driven smart factories created to bring internet technology to traditional manufacturers. The company offers algorithm-driven and flexible configurable multi-platform…
Black Lake Technologies revenue & fundingSlack vs Black Lake Technologies
United States · Team Collaboration Software
The company that owns Postman.com is called Postman. It was founded in 2014 and is headquartered in San Francisco, California, USA. Postman is a collaboration platform for API development, allowing users to design…
Switzerland · Team Collaboration Software
Nexthink is a Swiss software company specializing in digital employee experience (DEX) management, helping IT to shape smart and productive workplaces.
United States · Team Collaboration Software
Symphony is the most secure and compliant markets’ infrastructure and technology platform, where solutions are built or integrated to standardize, automate, innovate and liquefy financial services workflows. The…
Symphony Communication Services revenue & fundingSlack vs Symphony Communication Services
United States · Team Collaboration Software
Symphony is the most secure and compliant markets’ infrastructure and technology platform, where solutions are built or integrated to standardize, automate, innovate and liquefy financial services workflows. The…
Symphony Communication Services revenue & fundingSlack vs Symphony Communication Services
Slack ranks #1 of 2,458 Team Collaboration Software companies by annual revenue, putting it in the top 1% of the market.
| Date | Round | Amount | Valuation |
|---|---|---|---|
| Aug 2020 | Public | Not disclosed | $27.7B |
| Jun 2019 | Direct Listing (NYSE) | Not disclosed | $19.5B |
| Aug 2018 | Series H | $427M | $6.7B |
| Sep 2017 | Series G | $412.7M | $4.9B |
| Apr 2016 | Series F | $208M | $3.6B |
| Apr 2015 | Series E | $160M | $2.8B |
| Oct 2014 | Series D | $110.8M | $1B |
| Apr 2014 | Series C | $42.8M | $237.5M |
| Apr 2011 | Series B | $10.7M | $66.7M |
| Mar 2010 | Series A | $5M | $15M |
Slack Revenue: The Last Real Number Is $1.5B (Fiscal 2023)
Salesforce last put a dollar figure on Slack in March 2023: roughly $1.5 billion for fiscal 2023. Everything since is an estimate. Here is the full revenue trail from SEC filings, and a correction to our own database.
The closest alternatives to Slack are Mattermost, RocketChat and Discord. This page compares each of them with Slack on revenue, funding, customers and team size.
Mattermost is the closest alternative to Slack, generating $33.1M in revenue. Which alternative fits best depends on budget and company size, so compare all 20 alternatives above before choosing.
Slack generates $1.7B in revenue.
Slack has raised $35.2B in funding.
Slack has 10M customers.
Yes. Slack generates $1.7B in revenue versus $33.1M at Mattermost.
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