
Free / Open-sourceA free, AI-powered academic search engine for 240M+ papers across every scientific field
Free / Open-sourceA free, AI-powered academic search engine for 240M+ papers across every scientific field
note.md records 0 monthly visits with -100% month-over-month growth and Freemium pricing. Paperguide records 371,972 monthly visits with -2.9% growth and Freemium pricing.
note.md — Reading Studio
| Dimension / Metric | ||
|---|---|---|
| Official Domain | notemd.org | paperguide.ai |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 0 (0) | 371.97K (371,972) |
| MoM Traffic Delta | -2.13K (-100%) | -11.05K (-2.9%) |
| Primary Market & Share | 🌐 Global (—) | 🇺🇸 United States (25.6%) |
| Direct Visits / mo | 0 | 121.59K |
| User Rating | 4.2 | 4.4 |
| Supported Platforms | Website | Website |
note.md — Reading Studio
A side-by-side dual-pane reader that puts the PDF and your markdown editor next to each other, so highlights and annotations become part of your notes as you read.
Generate BibTeX or APA citations from PDF metadata, with every citation linked back to the exact highlight it came from so you can return to the passage months later.
A premium feature that searches your library by meaning rather than exact keywords, powered by on-device models so nothing is uploaded.
Bidirectional links between notes and sources build a visual relationship graph that can be exported in a Neo4j-friendly format.
AI-native workspace for literature reviews and auditable systematic reviews
Ask a research question in plain language and get a synthesized answer drawn from PubMed, arXiv, OpenAlex and Semantic Scholar, with every claim linked to its source paper.
Run PRISMA-style reviews with a predefined protocol, recorded screening decisions, dual independent reviewers and a conflict resolver, and a PRISMA diagram generated from your actual counts.
Import from Zotero or Mendeley, add papers by DOI, and get metadata and open-access PDFs fetched automatically, with annotations and notes that feed every other workflow.
Define custom extraction columns and have AI fill them across many papers, with each value linking back to the sentence it came from, exportable to CSV or Excel.

Free / Open-sourceA free, AI-powered academic search engine for 240M+ papers across every scientific field
Free / Open-sourceA free, AI-powered academic search engine for 240M+ papers across every scientific field

SpecialistSuperior for quick evidence-based academic search, but less of a comprehensive writing and reference suite.
SpecialistSuperior for quick evidence-based academic search, but less of a comprehensive writing and reference suite.

Offers robust PDF analysis and literature search workspaces, but lacks advanced systematic review screening workflows.
Offers robust PDF analysis and literature search workspaces, but lacks advanced systematic review screening workflows.
Stronger automated evidence synthesis and systematic review extraction, but less focused on end-to-end reference management.
Stronger automated evidence synthesis and systematic review extraction, but less focused on end-to-end reference management.
Stronger AI academic writing and autocomplete assistance, but less comprehensive for systematic literature mapping.
Stronger AI academic writing and autocomplete assistance, but less comprehensive for systematic literature mapping.
SpecialistIndustry standard for systematic review screening and deduplication, but weaker on AI writing generation.
SpecialistIndustry standard for systematic review screening and deduplication, but weaker on AI writing generation.
SpecialistExcellent smart citation analysis to verify if papers support or dispute claims, but narrower writing capabilities.
SpecialistExcellent smart citation analysis to verify if papers support or dispute claims, but narrower writing capabilities.

Free / Open-sourceFree visual research discovery and literature mapping tool, but offers less automated evidence synthesis and writing.
Free / Open-sourceFree visual research discovery and literature mapping tool, but offers less automated evidence synthesis and writing.
SpecialistUnmatched visual literature discovery and graph mapping, but lacks document drafting and reference management features.
SpecialistUnmatched visual literature discovery and graph mapping, but lacks document drafting and reference management features.
AI-powered platform to read, write, and stay current with research

One AI agent for finding, reading and writing with real research
One AI agent for finding, reading and writing with real research

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