Brandwave

Mattermost vs Microsoft Teams:Which is more popular?

In September 2026, Microsoft Teams had more branded searches than Mattermost among team chat apps worldwide. Microsoft Teams had about 4.1 million branded searches, while Mattermost had 110,000. Microsoft Teams made up 9.7% of all team chat app searches we track, and Mattermost accounted for 0.26%. When we asked ChatGPT and Google AI Overviews about team chat apps, Microsoft Teams appeared in all five answers and Mattermost in two. Microsoft Teams was mentioned before Mattermost in every answer.

Among team chat apps worldwide in September 2026

Who do people search for more?

Microsoft Teams, about 37 searches for every 1 for Mattermost

Microsoft Teams 4.1M searchesMattermost 110K searches

Who does AI mention more?

Microsoft Teams, mentioned in every answer we collected

Microsoft Teams in 5 of 5Mattermost in 2 of 5

Who does AI recommend more?

Microsoft Teams, named ahead of Mattermost in every answer

Microsoft Teams first in 5Mattermost never first

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Top team chat apps in ChatGPT and Google AI Overviews

In three ChatGPT questions and two Google AI Overviews, Microsoft Teams appeared in all five answers. Mattermost was mentioned in two out of five: in one of the three ChatGPT answers and in one of the two Google AI Overviews. Microsoft Teams was listed before Mattermost in every answer.

Most recommended by AI

Brands get a higher ranking if they are mentioned earlier in the answers.

  1. Slack1st
  2. Microsoft Teams2nd
  3. Google Chat3rd
  4. Discord4th
  5. Pumble5th
  6. Mattermost6th
  7. Element7th
  8. Zoho Cliq–
  9. Chanty–
  10. Rocket.Chat–

Mentioned by AI

Each dot is one answer, filled in when that answer mentions the brand.

  • Microsoft Teams5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Slack5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Google Chat5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Discord3 of 5Named in 2 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Mattermost2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Pumble2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Element2 of 5Named in 0 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Zoho Cliq0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Chanty0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Rocket.Chat0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers

See every answer about team chat apps

5 answers

Not named in any answer:

Brands are shown in the order each answer named them. The survey took place in the United States on October 19, 2026.

Is Mattermost or Microsoft Teams more popular in search?

This chart shows how often people search Google for Mattermost and Microsoft Teams by name. Each line represents a brand's share of searches for all ten team chat apps we track, month by month, from English-language searches worldwide.

Mattermost and Microsoft Teams among team chat apps worldwide, by month

Share of searches by month for Microsoft Teams, Mattermost. The figures are in the table below the chart.

View monthly share of searches table
MonthDiscordMicrosoft TeamsSlackGoogle ChatMattermostZoho CliqChantyRocket.ChatPumbleElement
Oct 202575.9%8.3%8.3%6.8%0.22%0.18%0.07%0.1%0.04%<0.01%
Nov 202578%8.6%7%5.7%0.23%0.19%0.07%0.08%0.04%<0.01%
Dec 202580.4%5.9%7.2%5.9%0.2%0.2%0.05%0.09%0.04%<0.01%
Jan 202679.3%7.1%7.1%5.8%0.23%0.16%0.07%0.09%0.05%<0.01%
Feb 202675.6%8.3%8.3%6.8%0.34%0.23%0.07%0.15%0.06%0.03%
Mar 202675.8%8.3%8.3%6.8%0.28%0.18%0.07%0.1%0.05%0.01%
Apr 202674.6%8.2%8.2%8.2%0.27%0.22%0.07%0.1%0.05%0.01%
May 202679.3%5.8%7.1%7.1%0.23%0.19%0.06%0.07%0.05%<0.01%
Jun 202676.9%6.9%8.5%6.9%0.28%0.28%0.1%0.08%0.05%0.01%
Jul 202676.9%6.9%8.5%6.9%0.23%0.28%0.08%0.08%0.06%0.01%
Aug 202680.3%5.9%7.2%5.9%0.2%0.24%0.07%0.06%0.04%<0.01%
Sep 202672%9.7%9.7%7.9%0.26%0.26%0.08%0.08%0.05%0.01%

How has the Mattermost and Microsoft Teams comparison changed over the last 12 months?

3 findings
  • Microsoft Teams was ahead of Mattermost in every measured month of the 12 months ending September 2026.
  • Across the 12 months ending September 2026, Mattermost’s share of searches among team chat apps worldwide moved from 0.22% to 0.26%, and its estimated monthly branded searches held steady at 110K.
  • Across the 12 months ending September 2026, Microsoft Teams’ share of searches among team chat apps worldwide moved from 8.3% to 9.7%, and its estimated monthly branded searches held steady at 4.1M.

How did search popularity change for team chat apps worldwide in September 2026?

2 changes

  1. In September 2026, Microsoft Teams overtook Slack and Google Chat to rank 2nd among team chat apps worldwide, with 9.7% of the searches.

  2. In September 2026, Mattermost rose from 6th to 5th among team chat apps worldwide.

How are branded searches counted?

2 search terms

Brandwave collects information about searches that people make online using Mattermost’s and Microsoft Teams’ names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading.

Mattermost

1 branded search term

  • mattermost

Microsoft Teams

1 branded search term

  • microsoft teams

How the Brand Demand Index is measured

Other head-to-heads among team chat apps

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