Best-Rated AI Browser Extensions (September 2026)
In September 2026, Sider ranks first with 5.0M, followed by Monica (3.0M) and Chat with all AI models (Gemini, Claude, DeepSeek...) & AI Agents | AITOPIA (1.0M). Top 20 of 53 candidates.
Data as of September 2026
| # | Extension | Publisher | Category | Installs | Rating |
|---|---|---|---|---|---|
| 1 |  Sider | Sider | General AI | 5.0M | 4.9 |
| 2 |  Monica | Butterfly Effect | General AI | 3.0M | 4.9 |
| 3 |  Chat with all AI models (Gemini, Claude, DeepSeek...) & AI Agents | AITOPIA | Aitopia | General AI | 1.0M | 4.9 |
| 4 |  Instant Data Scraper | Flavr Technology | Programming | 1.0M | 4.9 |
| 5 |  Tactiq | Tactiq | Office & Collaboration | 1.0M | 4.8 |
| 6 |  Scribe | Colony Labs | Office & Collaboration | 1.0M | 4.8 |
| 7 |  Merlin AI | Merlin | General AI | 900.0K | 4.8 |
| 8 |  eJOY AI Dictionary | ejoy-english | Education & Research | 700.0K | 4.8 |
| 9 |  Fathom AI Note Taker for Google Meet | fathom | Office & Collaboration | 600.0K | 4.9 |
| 10 |  Simplify Copilot | Simplify Jobs | Industry Services | 500.0K | 4.9 |
| 11 |  YouTube to NotebookLM | — | Office & Collaboration | 500.0K | 4.9 |
| 12 |  daily.dev | Where developers discover what's next | Daily Dev | News & Analytics | 400.0K | 4.8 |
| 13 |  Web Highlights | web-highlights | Office & Collaboration | 200.0K | 4.8 |
| 14 |  Knowt | Knowt | Education & Research | 200.0K | 4.9 |
| 15 |  DeepSider | deepsider | General AI | 200.0K | 4.8 |
| 16 |  AnswerAI | Answer.AI | Education & Research | 100.0K | 4.9 |
| 17 |  GPT Workspace | Qualtir | Writing | 100.0K | 4.9 |
| 18 |  QuestionAI Homework Powered AI Assistant | FlowMind Technology | Education & Research | 100.0K | 4.8 |
| 19 |  AI Chat Exporter | ai-chat-exporter | Office & Collaboration | 100.0K | 4.9 |
| 20 |  Browser MCP | browsermcp | General AI | 100.0K | 4.8 |
How this chart is built
Active install base and user ratings as published by the browser extension store.
A quality gate first, then popularity: only extensions rated 4.8+ with at least 500 reviews qualify, ranked by installs, then review count, then rating. Sorting by score alone would surface obscure extensions with a perfect score from a handful of reviews — that is a small sample, not a strong reputation.
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
Best-Rated AI Browser Extensions: who ranks #1?
In September 2026, Sider ranks #1 (installs: 5.0M); Monica is second (3.0M), followed by Chat with all AI models (Gemini, Claude, DeepSeek...) & AI Agents | AITOPIA (1.0M).
Best-Rated AI Browser Extensions: what are the top 10?
Ranked by installs as of September 2026, the top 10 are: 1. Sider, 2. Monica, 3. Chat with all AI models (Gemini, Claude, DeepSeek...) & AI Agents | AITOPIA, 4. Instant Data Scraper, 5. Tactiq, 6. Scribe, 7. Merlin AI, 8. eJOY AI Dictionary, 9. Fathom AI Note Taker for Google Meet, 10. Simplify Copilot. The full top 20 is in the table on this page.
Best-Rated AI Browser Extensions: 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.