Brandwave

Google Chat vs Mattermost:Which is more popular?

In September 2026, Google Chat had more branded searches than Mattermost among team chat apps worldwide. Google Chat had about 3.4 million branded searches, while Mattermost had 110,000. Google Chat made up 7.9% 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, Google Chat appeared in all five answers and Mattermost in two. Google Chat was mentioned before Mattermost in every answer.

Among team chat apps worldwide in September 2026

Who do people search for more?

Google Chat, about 30 searches for every 1 for Mattermost

Google Chat 3.4M searchesMattermost 110K searches

Who does AI mention more?

Google Chat, mentioned in every answer we collected

Google Chat in 5 of 5Mattermost in 2 of 5

Who does AI recommend more?

Google Chat, named ahead of Mattermost in every answer

Google Chat 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, Google Chat 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. Google Chat 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 Google Chat or Mattermost more popular in search?

This chart shows how often people search Google for Google Chat and Mattermost 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.

Google Chat and Mattermost among team chat apps worldwide, by month

Share of searches by month for Google Chat, 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 Google Chat and Mattermost comparison changed over the last 12 months?

3 findings
  • Google Chat was ahead of Mattermost in every measured month of the 12 months ending September 2026.
  • Across the 12 months ending September 2026, Google Chat’s share of searches among team chat apps worldwide moved from 6.8% to 7.9%, and its estimated monthly branded searches held steady at 3.4M.
  • 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.

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

3 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, Google Chat gained share of searches among team chat apps worldwide, from 5.9% to 7.9%.

  3. 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 Google Chat’s and Mattermost’s 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.

Google Chat

1 branded search term

  • google chat

Mattermost

1 branded search term

  • mattermost

How the Brand Demand Index is measured

Other head-to-heads among team chat apps

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