Brandwave

How popular isProject Euler?

In September 2026, people searched for Project Euler by name about 27,100 times worldwide, an 18.1% decrease from the previous year. These searches made up 0.55% of all global coding challenge brand searches, placing Project Euler tenth out of 11 brands. When we asked both ChatGPT and Google AI Overviews about coding challenge brands, Project Euler appeared in two of the five answers and was the tenth most recommended of the 11.

Search and AI answers in September 2026

Project Euler is the tenth most searched of 11 competitors and the tenth most recommended in AI answers.

  1. LeetCodeShare of searches 67.5%Mentioned in 4 of 5 AI answersPlace in AI recommendations 2nd
  2. HackerRankShare of searches 16.6%Mentioned in 5 of 5 AI answersPlace in AI recommendations 1st
  3. CodeforcesShare of searches 9.1%Mentioned in 3 of 5 AI answersPlace in AI recommendations 5th
  4. CodewarsShare of searches 1.8%Mentioned in 3 of 5 AI answersPlace in AI recommendations 4th
  5. Project EulerShare of searches 0.55%Mentioned in 2 of 5 AI answersPlace in AI recommendations 10th

+6 more

Project Euler website (opens in a new tab)

Follow Project Euler and get free monthly updates on what changed

By continuing you'll get index updates and occasional product news from Brandwave. Unsubscribe any time. Privacy

Top coding challenge brands in ChatGPT and Google AI Overviews

In three ChatGPT questions and two Google AI Overviews, Project Euler was mentioned in two out of five: in one of the three ChatGPT answers and in one of the two Google AI Overviews. Project Euler is the tenth most recommended of the 11.

Most recommended by AI

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

  1. HackerRank1st
  2. LeetCode2nd
  3. CodeSignal3rd
  4. Codewars4th
  5. Codeforces5th
  6. Exercism6th
  7. CoderPad7th
  8. HackerEarth8th
  9. Codility9th
  10. Project Euler10th
  11. +1 more

Mentioned by AI

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

  • HackerRank5 of 5Named in 3 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • LeetCode4 of 5Named in 2 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • Codeforces3 of 5Named in 2 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Codewars3 of 5Named in 2 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Exercism3 of 5Named in 2 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • CodeSignal3 of 5Named in 1 of 3 ChatGPT answersNamed in 2 of 2 Google answers
  • HackerEarth2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • CoderPad2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Project Euler2 of 5Named in 1 of 3 ChatGPT answersNamed in 1 of 2 Google answers
  • Codility1 of 5Named in 1 of 3 ChatGPT answersNamed in 0 of 2 Google answers

+1 more

See every answer about coding challenge brands

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.

Which coding challenge brands compete with Project Euler?

Project Euler against coding challenge brands worldwide, by month

Share of searches by month for LeetCode, HackerRank, Codeforces, Project Euler. The figures are in the table below the chart.

View monthly share of searches table
MonthLeetCodeHackerRankCodeforcesCodewarsExercismHackerEarthHireVueCoderPadCodeSignalProject EulerCodility
Oct 202555.1%20.2%13.5%3.3%1.8%1.2%1.2%1%1.2%0.81%0.55%
Nov 202559.4%17.8%11.9%3.6%1.6%1.3%1.1%0.88%1.1%0.72%0.59%
Dec 202560.1%18%12.1%2.9%1.3%1.6%0.89%0.73%1.1%0.73%0.49%
Jan 202662.7%15.4%12.6%3.1%1.4%1.1%0.93%0.76%0.93%0.62%0.51%
Feb 202662.6%15.4%12.6%2.5%1.7%1.7%0.92%0.76%0.92%0.62%0.41%
Mar 202663.2%15.5%10.4%2.5%2.1%2.1%1.1%0.93%0.93%0.63%0.51%
Apr 202659.7%17.9%12%2.9%2%1.6%1.1%0.88%0.88%0.59%0.48%
May 202665.6%13.2%10.8%3.2%1.8%1.4%0.97%0.97%0.97%0.65%0.43%
Jun 202668.5%13.7%9.2%2.3%1.8%1.2%0.83%0.83%0.68%0.55%0.37%
Jul 202667.6%16.6%9.1%1.8%1.5%0.82%0.67%0.67%0.55%0.45%0.3%
Aug 202667.3%16.5%9%1.8%1.5%0.99%0.81%0.66%0.66%0.45%0.3%
Sep 202667.5%16.6%9.1%1.8%1.2%0.82%0.82%0.67%0.67%0.55%0.3%

  1. 1.LeetCode

    67.5%

    Held 1st. 3.4M estimated branded searches, 0% vs prior month. Share +0.2 points.

  2. 2.HackerRank

    16.6%

    Held 2nd. 823K estimated branded searches, 0% vs prior month. Share +0.1 points.

  3. 3.Codeforces

    9.1%

    Held 3rd. 450K estimated branded searches, 0% vs prior month. Share 0 points.

  4. 4.Codewars

    1.8%

    Held 4th. 90.5K estimated branded searches, 0% vs prior month. Share 0 points.

  5. 5.Exercism

    1.2%

    Held 5th. 60.5K estimated branded searches, -18.2% vs prior month. Share -0.3 points.

  6. 6.HackerEarth

    0.82%

    Held 6th. 40.5K estimated branded searches, -18.2% vs prior month. Share -0.2 points.

  7. 7.HireVue

    0.82%

    Held 7th. 40.5K estimated branded searches, 0% vs prior month. Share 0 points.

  8. 8.CoderPad

    0.67%

    Held 8th. 33.1K estimated branded searches, 0% vs prior month. Share 0 points.

  9. 9.CodeSignal

    0.67%

    Held 9th. 33.1K estimated branded searches, 0% vs prior month. Share 0 points.

  10. 10.Project Euler

    0.55%

    Held 10th. 27.1K estimated branded searches, +22.1% vs prior month. Share +0.1 points.

  11. 11.Codility

    0.3%

    Held 11th. 14.8K estimated branded searches, 0% vs prior month. Share 0 points.

Compare popularity between Project Euler and its closest rivals

Every comparison with Project Euler

10 comparisons

How has branded search demand for Project Euler changed worldwide over the last 12 months?

2 findings
  • Across the 12 months ending September 2026, estimated monthly branded searches for Project Euler worldwide fell from 33.1K to 27.1K.
  • Across the 12 months ending September 2026, Project Euler’s share of searches among coding challenge brands worldwide held steady, from 0.81% to 0.55%.

How did search popularity change for coding challenge brands worldwide in September 2026?

6 changes

  1. Exercism’s share of searches among coding challenge brands worldwide has lost ground for 3 months in a row, from 1.8% to 1.2% in September 2026.

  2. Estimated monthly branded searches for LeetCode worldwide rose 49.6% over 12 measured months, from 2.2M to 3.4M in September 2026.

  3. Estimated monthly branded searches for Codility worldwide fell 33.3% over 12 measured months, from 22.2K to 14.8K in September 2026.

  4. Estimated monthly branded searches for CodeSignal worldwide fell 33.1% over 12 measured months, from 49.5K to 33.1K in September 2026.

  5. Estimated monthly branded searches for Codewars worldwide fell 33% over 12 measured months, from 135K to 90.5K in September 2026.

  6. Estimated monthly branded searches for CoderPad worldwide fell 18.3% over 12 measured months, from 40.5K to 33.1K in September 2026.

How are Project Euler’s branded searches counted?

1 search term

Brandwave collects information about searches that people make online using Project Euler’s name. When viewed over time, estimated search volumes for this branded term can be used to understand whether interest in the brand is growing, holding steady, or fading.

  • project euler

Do you work for Project Euler? To request corrections or removal please contact us via our support page and we will be happy to assist.

How the Brand Demand Index is measured

Creator with pink hair and a pink jacket

Is Project Euler your brand?

Put your own campaigns, spend and outcomes next to this demand line, so you can see which of your marketing lined up with the movements above.

Start free