Top AI Browser Extensions by Installs (September 2026)
In September 2026, Grammarly ranks first with 40.0M, followed by Claude (16.0M) and WPS PDF (7.0M). Top 20 of 10,223 candidates.
Data as of September 2026
| # | Extension | Publisher | Category | Installs | Rating | MoM |
|---|---|---|---|---|---|---|
| 1 |  Grammarly | Grammarly | Writing | 40.0M | 4.5 | +2.6% |
| 2 |  Claude | Anthropic | General AI | 16.0M | 2.8 | +6.7% |
| 3 |  WPS PDF | WPS | Office & Collaboration | 7.0M | 4.5 | +16.7% |
| 4 |  AnyDoc Translator | toolsmart | Office & Collaboration | 6.0M | 4.6 | +0% |
| 5 |  ChatGPT | OpenAI | General AI | 6.0M | 2.8 | +50% |
| 6 |  Quillbot | QuillBot | Writing | 6.0M | 4.7 | +20% |
| 7 |  Sider | Sider | General AI | 5.0M | 4.9 | +0% |
| 8 |  DeepL | DeepL | Office & Collaboration | 4.0M | 4.7 | +0% |
| 9 |  ChatGPT search | OpenAI | General AI | 4.0M | 3.3 | +0% |
| 10 |  Immersive Translate | Immersive Translate | Office & Collaboration | 3.0M | 3.9 | +0% |
| 11 |  Monica | Butterfly Effect | General AI | 3.0M | 4.9 | +0% |
| 12 |  Smallpdf | Smallpdf | Office & Collaboration | 3.0M | 4.6 | +50% |
| 13 |  YouTube Summary with ChatGPT & Claude | GLASP | General AI | 2.0M | 4.3 | +100% |
| 14 |  AI Grammar Checker & Paraphraser | LanguageTooler | Writing | 2.0M | 4.7 | +0% |
| 15 |  Chat with all AI models (Gemini, Claude, DeepSeek...) & AI Agents | AITOPIA | Aitopia | General AI | 1.0M | 4.9 | +11.1% |
| 16 |  ChatbotsPlace | ChatbotsPlace | General AI | 1.0M | 4.8 | +25% |
| 17 |  Tactiq | Tactiq | Office & Collaboration | 1.0M | 4.8 | +0% |
| 18 |  Similarweb | similarweb | News & Analytics | 1.0M | 4.6 | +0% |
| 19 |  NaturalReader | NaturalSoft | Audio | 1.0M | 4.2 | +25% |
| 20 |  Wordtune | AI21 Labs | Writing | 1.0M | 4.6 | +0% |
How this chart is built
Active install base and user ratings as published by the browser extension store.
Positions are renumbered from high to low by this table's own metric, independent of any ranking the source publishes. Figures are the current real data with no manual adjustment; values we cannot obtain show as “—” and are never filled in with estimates.
FAQ
Top AI Browser Extensions by Installs: who ranks #1?
In September 2026, Grammarly ranks #1 (installs: 40.0M); Claude is second (16.0M), followed by WPS PDF (7.0M).
Top AI Browser Extensions by Installs: what are the top 10?
Ranked by installs as of September 2026, the top 10 are: 1. Grammarly, 2. Claude, 3. WPS PDF, 4. AnyDoc Translator, 5. ChatGPT, 6. Quillbot, 7. Sider, 8. DeepL, 9. ChatGPT search, 10. Immersive Translate. The full top 20 is in the table on this page.
Top AI Browser Extensions by Installs: which entry is growing fastest?
Among the 20 entries on this chart, YouTube Summary with ChatGPT & Claude grew fastest month over month (+100%).
Top AI Browser Extensions by Installs: where does the data come from, and how often is it updated?
Active install base and user ratings as published by the browser extension store. Updated monthly; the current data is for September 2026.