---
title: "AI browser extensions: Which brands are most popular in search?"
description: "Compare the extensions that add AI to the browser. Share of Search among Monica, Merlin, Sider, Harpa and MaxAI, the AI browser extensions Brandwave compares worldwide, using the same methodology, market, and reporting period. 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."
canonical: "https://gobrandwave.com/demand/global-en/categories/ai-browser-extensions"
publisher: "Brandwave"
---

# AI browser extensions: Which brands are most popular in search?

Compare the extensions that add AI to the browser. Share of Search among Monica, Merlin, Sider, Harpa and MaxAI, the AI browser extensions Brandwave compares worldwide, using the same methodology, market, and reporting period. 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.

## Key facts

- **Competitive set**: AI browser extensions
- **Market**: Global
- **Brands compared**: 5
- **Month measured**: Aug 2026
- **Highest Share of Search**: Monica, 47.5%

## Which brand is most popular in search among AI browser extensions worldwide?

- 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.
- 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.

## Compare search popularity between leading brands

- [Monica vs Merlin: compare search popularity](/demand/global-en/compare/merlin-ai-vs-monica-ai): 47.5% against 31.7% Share of Search.
- [Monica vs Sider: compare search popularity](/demand/global-en/compare/monica-ai-vs-sider): 47.5% against 14.2% Share of Search.
- [Monica vs Harpa: compare search popularity](/demand/global-en/compare/harpa-vs-monica-ai): 47.5% against 4.2% Share of Search.
- [Monica vs MaxAI: compare search popularity](/demand/global-en/compare/maxai-vs-monica-ai): 47.5% against 2.3% Share of Search.
- [Merlin vs Sider: compare search popularity](/demand/global-en/compare/merlin-ai-vs-sider): 31.7% against 14.2% Share of Search.
- [Merlin vs Harpa: compare search popularity](/demand/global-en/compare/harpa-vs-merlin-ai): 31.7% against 4.2% Share of Search.
- [Merlin vs MaxAI: compare search popularity](/demand/global-en/compare/maxai-vs-merlin-ai): 31.7% against 2.3% Share of Search.
- [Sider vs Harpa: compare search popularity](/demand/global-en/compare/harpa-vs-sider): 14.2% against 4.2% Share of Search.
- [Sider vs MaxAI: compare search popularity](/demand/global-en/compare/maxai-vs-sider): 14.2% against 2.3% Share of Search.
- [Harpa vs MaxAI: compare search popularity](/demand/global-en/compare/harpa-vs-maxai): 4.2% against 2.3% Share of Search.

## How did search popularity change for AI browser extensions worldwide in August 2026?

- 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.

## Share of Search ranking

| Rank | Brand | Share of Search | Estimated monthly branded searches | Change vs prior month | Owned by |
| --- | --- | --- | --- | --- | --- |
| 1 | Monica | 47.5% | 90.5K | 0.0% | Monica |
| 2 | Merlin | 31.7% | 60.5K | 0.0% | Merlin |
| 3 | Sider | 14.2% | 27.1K | 0.0% | Sider |
| 4 | Harpa | 4.2% | 8.1K | 0.0% | Harpa |
| 5 | MaxAI | 2.3% | 4.4K | 0.0% | MaxAI |

## Historical estimated branded-search demand

| Month | Brand | Estimated monthly branded searches | Share of Search | Rank |
| --- | --- | --- | --- | --- |
| Oct 2025 | Monica | 135K | 42.4% | 1 |
| Oct 2025 | Merlin | 90.5K | 28.4% | 2 |
| Oct 2025 | Sider | 74K | 23.3% | 3 |
| Oct 2025 | Harpa | 12.1K | 3.8% | 4 |
| Oct 2025 | MaxAI | 6.6K | 2.1% | 5 |
| Nov 2025 | Monica | 110K | 41.6% | 1 |
| Nov 2025 | Merlin | 74K | 28% | 2 |
| Nov 2025 | Sider | 60.5K | 22.9% | 3 |
| Nov 2025 | Harpa | 12.1K | 4.6% | 4 |
| Nov 2025 | MaxAI | 8.1K | 3.1% | 5 |
| Dec 2025 | Monica | 90.5K | 43.5% | 1 |
| Dec 2025 | Merlin | 60.5K | 29.1% | 2 |
| Dec 2025 | Sider | 40.5K | 19.5% | 3 |
| Dec 2025 | Harpa | 9.9K | 4.8% | 4 |
| Dec 2025 | MaxAI | 6.6K | 3.2% | 5 |
| Jan 2026 | Monica | 90.5K | 43.1% | 1 |
| Jan 2026 | Merlin | 60.5K | 28.8% | 2 |
| Jan 2026 | Sider | 40.5K | 19.3% | 3 |
| Jan 2026 | Harpa | 12.1K | 5.8% | 4 |
| Jan 2026 | MaxAI | 6.6K | 3.1% | 5 |
| Feb 2026 | Monica | 135K | 53% | 1 |
| Feb 2026 | Merlin | 60.5K | 23.8% | 2 |
| Feb 2026 | Sider | 40.5K | 15.9% | 3 |
| Feb 2026 | Harpa | 12.1K | 4.8% | 4 |
| Feb 2026 | MaxAI | 6.6K | 2.6% | 5 |
| Mar 2026 | Monica | 165K | 55.7% | 1 |
| Mar 2026 | Merlin | 60.5K | 20.4% | 2 |
| Mar 2026 | Sider | 49.5K | 16.7% | 3 |
| Mar 2026 | Harpa | 14.8K | 5% | 4 |
| Mar 2026 | MaxAI | 6.6K | 2.2% | 5 |
| Apr 2026 | Monica | 110K | 47.3% | 1 |
| Apr 2026 | Merlin | 60.5K | 26% | 2 |
| Apr 2026 | Sider | 40.5K | 17.4% | 3 |
| Apr 2026 | Harpa | 14.8K | 6.4% | 4 |
| Apr 2026 | MaxAI | 6.6K | 2.8% | 5 |
| May 2026 | Monica | 110K | 45.6% | 1 |
| May 2026 | Merlin | 60.5K | 25.1% | 2 |
| May 2026 | Sider | 49.5K | 20.5% | 3 |
| May 2026 | Harpa | 14.8K | 6.1% | 4 |
| May 2026 | MaxAI | 6.6K | 2.7% | 5 |
| Jun 2026 | Monica | 90.5K | 45.1% | 1 |
| Jun 2026 | Merlin | 60.5K | 30.2% | 2 |
| Jun 2026 | Sider | 33.1K | 16.5% | 3 |
| Jun 2026 | Harpa | 9.9K | 4.9% | 4 |
| Jun 2026 | MaxAI | 6.6K | 3.3% | 5 |
| Jul 2026 | Monica | 90.5K | 47.5% | 1 |
| Jul 2026 | Merlin | 60.5K | 31.7% | 2 |
| Jul 2026 | Sider | 27.1K | 14.2% | 3 |
| Jul 2026 | Harpa | 8.1K | 4.2% | 4 |
| Jul 2026 | MaxAI | 4.4K | 2.3% | 5 |
| Aug 2026 | Monica | 90.5K | 47.5% | 1 |
| Aug 2026 | Merlin | 60.5K | 31.7% | 2 |
| Aug 2026 | Sider | 27.1K | 14.2% | 3 |
| Aug 2026 | Harpa | 8.1K | 4.2% | 4 |
| Aug 2026 | MaxAI | 4.4K | 2.3% | 5 |
| Sep 2026 | Harpa | — | — | — |
| Sep 2026 | MaxAI | — | — | — |
| Sep 2026 | Merlin | — | — | — |
| Sep 2026 | Monica | — | — | — |
| Sep 2026 | Sider | — | — | — |

## What is being compared

- **Harpa**: Measured on the search term “harpa ai”.
- **MaxAI**: Measured on the search term “maxai”.
- **Merlin**: Measured on the search term “merlin ai”.
- **Monica**: Measured on the search term “monica ai”.
- **Sider**: Measured on the search term “sider ai”.

- [Harpa](/demand/global-en/brands/harpa)
- [MaxAI](/demand/global-en/brands/maxai)
- [Merlin](/demand/global-en/brands/merlin-ai)
- [Monica](/demand/global-en/brands/monica-ai)
- [Sider](/demand/global-en/brands/sider)

## Methodology

- [How is branded search demand measured?](/demand/methodology): Where the figures come from, what they compare, and how they may be reused.

## Frequently asked questions

### Which brand is most popular in search among AI browser extensions worldwide?

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.

## Cite this page

Brandwave. "AI browser extensions: Which brands are most popular in search?". https://gobrandwave.com/demand/global-en/categories/ai-browser-extensions

This page is also available as HTML at https://gobrandwave.com/demand/global-en/categories/ai-browser-extensions. Brandwave publishes an index of its Markdown pages at https://gobrandwave.com/llms.txt.