Brandwave

ConfigCat vs Optimizely:Which is more popular?

In September 2026, Optimizely had more branded searches than ConfigCat among feature flag tools worldwide. Optimizely had about 246,000 branded searches, while ConfigCat had 3,630. Optimizely made up 42.4% of all feature flag tool searches we track, and ConfigCat accounted for 0.62%. When we asked ChatGPT and Google AI Overviews about feature flag tools, ConfigCat appeared in one of the five answers and Optimizely in none.

Among feature flag tools worldwide in September 2026

Who do people search for more?

Optimizely, about 68 searches for every 1 for ConfigCat

Optimizely 246K searchesConfigCat 3.6K searches

Who does AI mention more?

ConfigCat, mentioned in 1 of 5 answers, Optimizely in 0

ConfigCat in 1 of 5Optimizely in 0 of 5

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Top feature flag tools in ChatGPT and Google AI Overviews

In three ChatGPT questions and two Google AI Overviews, ConfigCat was mentioned in one out of five: in one of the three ChatGPT answers, but not in either of the two Google AI Overviews. Optimizely did not appear in any of the five answers.

Most recommended by AI

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

  1. LaunchDarkly1st
  2. Unleash2nd
  3. Flagsmith3rd
  4. Statsig4th
  5. GrowthBook5th
  6. PostHog6th
  7. Split6th
  8. ConfigCat8th
  9. Optimizely–

Mentioned by AI

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

  • LaunchDarkly5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Flagsmith5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Unleash5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • GrowthBook4 of 5Named in 3 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Statsig3 of 5Named in 1 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • PostHog2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • ConfigCat1 of 5Named in 1 of 3 ChatGPT answersNamed in 0 of 2 Google answers
  • Split1 of 5Named in 0 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Optimizely0 of 5Named in 0 of 3 ChatGPT answersNamed in 0 of 2 Google answers

See every answer about feature flag tools

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 20, 2026.

Is ConfigCat or Optimizely more popular in search?

This chart shows how often people search Google for ConfigCat and Optimizely by name. Each line represents a brand's share of searches for all nine feature flag tools we track, month by month, from English-language searches worldwide.

ConfigCat and Optimizely among feature flag tools worldwide, by month

Share of searches by month for Optimizely, ConfigCat. The figures are in the table below the chart.

View monthly share of searches table
MonthOptimizelyPostHogLaunchDarklyStatsigGrowthBookFlagsmithConfigCatSplitUnleash
Oct 202553.4%23.9%11%5.9%2.6%0.97%0.79%0.82%0.5%
Nov 202556.6%25.3%7.9%4.2%2.8%1%0.84%0.75%0.51%
Dec 202556.8%25.4%7.9%4.2%2.8%1%0.68%0.64%0.5%
Jan 202657.7%25.9%8%3.5%2.3%0.86%0.7%0.65%0.42%
Feb 202658.2%21.4%10.1%4.3%2.9%1.1%0.86%0.66%0.52%
Mar 202649%32.8%8.5%3.7%3%1.1%0.73%0.72%0.55%
Apr 202654.3%24.3%9.4%5%4%0.99%0.8%0.64%0.48%
May 202652.6%28.9%7.8%4.8%3.2%0.96%0.63%0.6%0.47%
Jun 202645.6%37.3%8.3%3.4%2.8%1%0.68%0.51%0.41%
Jul 202645.7%37.3%8.4%3.4%2.8%0.85%0.68%0.44%0.41%
Aug 202647.1%38.5%6.8%2.9%2.3%0.86%0.7%0.47%0.41%
Sep 202642.4%42.4%7.3%3.2%2.6%0.78%0.62%0.5%0.32%

How has the ConfigCat and Optimizely comparison changed over the last 12 months?

3 findings
  • Optimizely was ahead of ConfigCat in every measured month of the 12 months ending September 2026.
  • Across the 12 months ending September 2026, ConfigCat’s share of searches among feature flag tools worldwide moved from 0.79% to 0.62%, and its estimated monthly branded searches held steady at 3.6K.
  • Across the 12 months ending September 2026, Optimizely’s share of searches among feature flag tools worldwide moved from 53.4% to 42.4%, and its estimated monthly branded searches held steady at 246K.

How did search popularity change for feature flag tools worldwide in September 2026?

1 change

  1. In September 2026, Optimizely lost share of searches among feature flag tools worldwide, from 47.1% to 42.4%.

How are branded searches counted?

4 search terms

Brandwave collects information about searches that people make online using ConfigCat’s and Optimizely’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.

ConfigCat

3 branded search terms

  • configcat
  • configcat com
  • configcat feature flags

Optimizely

1 branded search term

  • optimizely

How the Brand Demand Index is measured

Other head-to-heads among feature flag tools

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