AI browser extensions:Which brands are most popular in search?
In August 2026, Monica was the most searched among AI browser extensions worldwide, with an estimated 90.5K branded searches and 47.5% estimated Share of Search within this set. These are worldwide searches for English-language branded terms.
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Share of SearchLeaderboard
Compare the extensions that add AI to the browser. Branded searches tell you how often people look for a brand by name or related terms. Comparing these searches across competitors helps you see how popular each brand is over time.
Share of Search by month for Monica, Merlin, Sider, Harpa, MaxAI. The figures are in the table below the chart.
View monthly share of search table
| Month | Monica | Merlin | Sider | Harpa | MaxAI |
|---|---|---|---|---|---|
| Oct 2025 | 42.4% | 28.4% | 23.3% | 3.8% | 2.1% |
| Nov 2025 | 41.6% | 28% | 22.9% | 4.6% | 3.1% |
| Dec 2025 | 43.5% | 29.1% | 19.5% | 4.8% | 3.2% |
| Jan 2026 | 43.1% | 28.8% | 19.3% | 5.8% | 3.1% |
| Feb 2026 | 53% | 23.8% | 15.9% | 4.8% | 2.6% |
| Mar 2026 | 55.7% | 20.4% | 16.7% | 5% | 2.2% |
| Apr 2026 | 47.3% | 26% | 17.4% | 6.4% | 2.8% |
| May 2026 | 45.6% | 25.1% | 20.5% | 6.1% | 2.7% |
| Jun 2026 | 45.1% | 30.2% | 16.5% | 4.9% | 3.3% |
| Jul 2026 | 47.5% | 31.7% | 14.2% | 4.2% | 2.3% |
| Aug 2026 | 47.5% | 31.7% | 14.2% | 4.2% | 2.3% |
| Sep 2026 | — | — | — | — | — |
This month’s ranking, August 2026
| Rank | Brand | Share of Search | Estimated monthly branded searches | vs prior month | Share change |
|---|---|---|---|---|---|
| 1, held 1st | 47.5% | 90.5K | 0% | 0 points | |
| 2, held 2nd | 31.7% | 60.5K | 0% | 0 points | |
| 3, held 3rd | 14.2% | 27.1K | 0% | 0 points | |
| 4, held 4th | 4.2% | 8.1K | 0% | 0 points | |
| 5, held 5th | 2.3% | 4.4K | 0% | 0 points |
1.
Monica47.5%
Held 1st. 90.5K estimated branded searches, 0% vs prior month. Share 0 points.
2.
Merlin31.7%
Held 2nd. 60.5K estimated branded searches, 0% vs prior month. Share 0 points.
3.
Sider
14.2%
Held 3rd. 27.1K estimated branded searches, 0% vs prior month. Share 0 points.
4.
Harpa4.2%
Held 4th. 8.1K estimated branded searches, 0% vs prior month. Share 0 points.
5.
MaxAI2.3%
Held 5th. 4.4K estimated branded searches, 0% vs prior month. Share 0 points.
Compare search popularity between leading brands
- Monica vs Merlin: compare search popularity
- Monica vs Harpa: compare search popularity
- Monica vs MaxAI: compare search popularity
- Merlin vs Harpa: compare search popularity
- Merlin vs MaxAI: compare search popularity
- Sider vs Harpa: compare search popularity
- Sider vs MaxAI: compare search popularity
- Harpa vs MaxAI: compare search popularity
- Compare any of these brands
Which brand is most popular in search among AI browser extensions worldwide?
5 brands
In August 2026, Monica was the most searched among AI browser extensions worldwide, with an estimated 90.5K branded searches and 47.5% estimated Share of Search within this set. Merlin is in 2nd place, 15.7 percentage points behind at 31.7% Share of Search.
| Brand | Share of Search | Peak | Low | Rank |
|---|---|---|---|---|
| Monica | 42.4% → 47.5% | 55.7%Mar 2026 | 41.6%Nov 2025 | 1st |
| Merlin | 28.4% → 31.7% | 31.7%Jul 2026 | 20.4%Mar 2026 | 2nd |
| Sider | 23.3% → 14.2% | 23.3%Oct 2025 | 14.2%Jul 2026 | 3rd |
| Harpa | 3.8% → 4.2% | 6.4%Apr 2026 | 3.8%Oct 2025 | 4th |
| MaxAI | 2.1% → 2.3% | 3.3%Jun 2026 | 2.1%Oct 2025 | 5th |
Each finding as a sentence
- Across the 11 months ending August 2026, Monica’s estimated Share of Search among AI browser extensions worldwide increased from 42.4% to 47.5%.
- Across the 11 months ending August 2026, Merlin’s estimated Share of Search among AI browser extensions worldwide increased from 28.4% to 31.7%.
- Across the 11 months ending August 2026, Sider’s estimated Share of Search among AI browser extensions worldwide decreased from 23.3% to 14.2%.
- Across the 11 months ending August 2026, Monica’s estimated Share of Search among AI browser extensions worldwide peaked at 55.7% in March 2026 and was lowest at 41.6% in November 2025.
- Across the 11 months ending August 2026, Merlin’s estimated Share of Search among AI browser extensions worldwide peaked at 31.7% in July 2026 and was lowest at 20.4% in March 2026.
- Across the 11 months ending August 2026, Sider’s estimated Share of Search among AI browser extensions worldwide peaked at 23.3% in October 2025 and was lowest at 14.2% in July 2026.
- Across the 11 months ending August 2026, Harpa’s estimated Share of Search among AI browser extensions worldwide peaked at 6.4% in April 2026 and was lowest at 3.8% in October 2025.
- Across the 11 months ending August 2026, MaxAI’s estimated Share of Search among AI browser extensions worldwide peaked at 3.3% in June 2026 and was lowest at 2.1% in October 2025.
- Across the 11 months ending August 2026, Harpa and MaxAI held steady: their estimated Share of Search among AI browser extensions worldwide each moved less than 0.5 percentage points.
How did search popularity change for AI browser extensions worldwide in August 2026?
5 changes
Estimated monthly branded searches for Sider worldwide fell 63.4% over 11 measured months, from 74K to 27.1K in August 2026.
Estimated monthly branded searches for MaxAI worldwide fell 33.3% over 11 measured months, from 6.6K to 4.4K in August 2026.
Estimated monthly branded searches for Merlin worldwide fell 33.1% over 11 measured months, from 90.5K to 60.5K in August 2026.
Estimated monthly branded searches for Harpa worldwide fell 33.1% over 11 measured months, from 12.1K to 8.1K in August 2026.
Estimated monthly branded searches for Monica worldwide fell 33% over 11 measured months, from 135K to 90.5K in August 2026.
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