AI sidebar and browser agent for reading, writing and research
12 alternatives to SearchWithin Extension, matched by what they do.
| Rank | Tool & Tagline | Official Domain | Monthly Visits | MoM Growth | Pricing Model | Primary Market | Rating | Compare |
|---|---|---|---|---|---|---|---|---|
| ● | SearchWithin Extension | chromewebstore.google.com | 0 | 0 (—) | Freemium | Global | — | Profile |
| 1 | Sider | sider.ai | 2.64M | -314.2K (-10.6%) | Freemium | United States | 4.5 | Compare |
| 2 | ChatPDF | chatpdf.com | 1.04M | -40.47K (-3.7%) | Freemium | United States | 4.2 | Compare |
| 3 | Merlin AI | getmerlin.in | 1.38M | 159.85K (+13.1%) | Freemium | United States | 4.3 | Compare |
| 4 | PDFgear | pdfgear.com | 2.85M | -100.48K (-3.4%) | Free | United States | 4.5 | Compare |
| 5 | Glarity | glarity.app | 188.82K | -185.65K (-49.6%) | Freemium | United States | 4 | Compare |
| 6 | Glasp | glasp.co | 889.56K | -146.38K (-14.1%) | Freemium | United States | 4.2 | Compare |
| 7 | HARPA AI | harpa.ai | 537.46K | 267.81K (+99.3%) | Freemium | United States | 4.6 | Compare |
| 8 | Monica | monica.im | 4.51M | -573.08K (-11.3%) | Freemium | United States | 4.3 | Compare |
| 9 | Walles.ai - Your AI Browser Sidekick | walles.ai | 8.31K | -5.35K (-39.2%) | Freemium | Global | 3.8 | Compare |
| 10 | Gene | askgene.io | 2.49K | 1.16K (+87%) | Free | Global | 4.1 | Compare |
| 11 | PDF.ai | pdf.ai | 387.82K | -22.46K (-5.5%) | Freemium, Free Trial | Brazil | 4.2 | Compare |
| 12 | LightPDF | lightpdf.com | 1.74M | -314.58K (-15.3%) | Freemium | India | 4.2 | Compare |
AI sidebar and browser agent for reading, writing and research
Chat with any PDF, video, or website and get cited answers in seconds
#2One-click AI assistant for browsing, writing and research
A free, AI-powered PDF editor for every device

Free / Open-sourceSummarize YouTube, Google, and any page with AI — free in your browser
Highlight the web, learn in public, and build your AI clone
One browser agent that combines every major AI model with web automation

All-in-one AI assistant across web, browser, desktop and mobile
Your GPT-powered sidekick for every page, PDF and video

A low-cost AI assistant that lives in your browser tab
Chat with any PDF and get cited answers instantly

Free AI-powered PDF editor, converter and reader for every device
AI sidebar and browser agent for reading, writing and research
One-click AI assistant for browsing, writing and research
Free / Open-sourceSummarize YouTube, Google, and any page with AI — free in your browser
Highlight the web, learn in public, and build your AI clone
All-in-one AI assistant across web, browser, desktop and mobile
Your GPT-powered sidekick for every page, PDF and video
A low-cost AI assistant that lives in your browser tab
Free AI-powered PDF editor, converter and reader for every device