An intelligent notebook that turns browsing, files and video into notes
Estimated monthly website visits
Similarweb estimates for this domain, not active users. Only available observation months are shown; collection date is separate from the traffic period.
Collected Nov 11, 2026
This is our editors' assessment out of 5, not an average of user ratings. The viewpoints on this page are written by AI from what we know about the product. They are not customer reviews.
According to OpenAITools.app telemetry verified on 2026-11-11, Deta Surf (deta.surf) is an AI platform indexed under AI Browsers generating 5.32K monthly visits with a month-over-month traffic delta of -5.12K (-49%). Its primary geographic market is United States (33.9% traffic share), and it operates on a Free pricing model. Top competing alternatives by monthly volume include Knowt (4.18M visits/mo), SurfSense (61.87K visits/mo), ChatPDF (1.04M visits/mo).
Local-first open source workspace for research is a game changer.
Summarizing YouTube and PDFs in one notebook saves hours.
Sleek and private.
Syncing could be smoother between devices.
AI-synthesized perspectives grounded in live site inspection, pricing structure, and category benchmarks — presented as editorial viewpoints rather than individual customer testimonials.
Collect web pages, PDFs, images, notes and sketches into a single space instead of juggling separate apps.
Your content is stored on your device with import and export options, and the core source is public on GitHub.
Connect cloud LLMs with your own API key or run local models, choosing the intelligence layer yourself.
Generated notes link directly back to the source page, video or document they came from.
Turn dense material into interactive graphs and small apps without writing code.
Summarise hours of YouTube video, long PDFs and foreign-language or scientific material in place.
Surf positions itself against two habits: endless tab collecting and note apps that know nothing about what you were reading. You add a page, a PDF, a YouTube video, an image or a sketch to a notebook, and the built-in assistant can summarise it, answer questions, translate dense passages or generate interactive graphs and small interactive applets.
The design principles are privacy and openness. Your data is stored locally and can be imported, exported and managed as you like; the core source code is public on GitHub; and the intelligence layer is pluggable, so you can bring your own API key for a cloud model or run a local model instead of being locked into one provider.
Surf has moved from a private alpha into an open beta, and the team describes ongoing work on speed and stability. It is free to use, aimed at students, researchers and curious readers who want an AI-assisted research environment rather than another chatbot in a sidebar.
Gather readings, summarise long PDFs and keep citations organised for essays and revision.
Compare multiple sources in one notebook, ask questions across them and export the notes.
Turn lengthy web pages and recorded briefings into structured, citable notes.
Run Surf with a local model or your own API key and adapt the open core to your workflow.
Side-by-side telemetry comparison of competing AI tools in the same primary category
| Rank | AI Tool | Monthly Visits | MoM Growth | Direct traffic share | Pricing | Head-to-Head |
|---|---|---|---|---|---|---|
| ● | Deta Surf | 5.32K | -49% | 38% direct | Free | Current |
| 1 | Knowt | 4.18M | +5.4% | 66% direct | Free | vs Knowt |
| 2 | SurfSense | 61.87K | -17.4% | 34% direct | Freemium, Free Trial, Contact for Pricing | vs SurfSense |
| 3 | ChatPDF | 1.04M | -3.7% | 44% direct | Freemium | vs ChatPDF |
| 4 | Flexnote | 41.02K | +113.1% | 43% direct | Freemium | vs Flexnote |
| 5 | Jenni | 1.5M | +5.2% | 36% direct | Freemium | vs Jenni |
| 6 | Perplexity | 88.31M | -3.7% | 72% direct | Freemium | vs Perplexity |
Free AI flashcard and study tools for students
Free AI flashcard and study tools for students
Free / Open-sourceA private, offline notebook that turns your own sources into reports, decks and briefings
Free / Open-sourceA private, offline notebook that turns your own sources into reports, decks and briefings
Chat with any PDF, video, or website and get cited answers in seconds
SpecialistLocal-first visual note-taking on an infinite canvas with mind maps and knowledge-base AI
SpecialistLocal-first visual note-taking on an infinite canvas with mind maps and knowledge-base AI
The AI workspace where researchers read, write, and cite with every claim traceable to its source
The AI workspace where researchers read, write, and cite with every claim traceable to its source
SpecialistReal-time AI answer engine and research workspace combining live web citations with frontier reasoning models.
SpecialistReal-time AI answer engine and research workspace combining live web citations with frontier reasoning models.
Free / Open-sourceOpen-source note-taking with backlinks, local Markdown and optional AI
Free / Open-sourceOpen-source note-taking with backlinks, local Markdown and optional AI
Translate, summarize, and understand documents in 154 languages without losing the layout
Translate, summarize, and understand documents in 154 languages without losing the layout
SpecialistThe AI browser that reads between your tabs
SpecialistTurn any lecture, file, or video into notes, flashcards, and quizzes
SpecialistTurn any lecture, file, or video into notes, flashcards, and quizzes
SpecialistFree AI Summarizer for text, articles, URLs and images
SpecialistFree AI Summarizer for text, articles, URLs and images
SpecialistPrivate AI that answers from your own documents, on Mac and Windows
SpecialistPrivate AI that answers from your own documents, on Mac and Windows
