
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
Paperguide records 371,972 monthly visits with -2.9% month-over-month growth and Freemium pricing. Profundo records 578 monthly visits with -62.1% growth and Contact for Pricing pricing.
AI research assistant that turns a question into a structured report
| Dimension / Metric | ||
|---|---|---|
| Official Domain | paperguide.ai | profundo.app |
| Pricing Model | Freemium | Contact for Pricing |
| Monthly Visits | 371.97K (371,972) | 578 (578) |
| MoM Traffic Delta | -11.05K (-2.9%) | -949 (-62.1%) |
| Primary Market & Share | 🇺🇸 United States (25.6%) | 🇺🇸 United States (100%) |
| Direct Visits / mo | 121.59K | 228 |
| User Rating | 4.4 | 4 |
| Supported Platforms | Website | Website |
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.
AI research assistant that turns a question into a structured report
Automatically scrapes and gathers data from hundreds of web sources and libraries in real time, so research starts from a broad base of evidence.
Sophisticated algorithms analyze gathered data to identify patterns, trends, and insights rather than just collecting raw material.
Generates detailed, comprehensive reports tailored to your needs, with an editable outline and summary you can refine.
Apply templates to search queries for more targeted insights, keeping reports accurate and informative.

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.
Free / Open-sourceAI research assistant for evidence-based literature review and synthesis
Free / Open-sourceAI research assistant for evidence-based literature review and synthesis
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.
Free / Open-sourceAI-assisted systematic review software for screening, extraction, and evidence synthesis at scale
Free / Open-sourceAI-assisted systematic review software for screening, extraction, and evidence synthesis at scale
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.
Free / Open-sourceExplore the academic literature as a visual graph of related papers
Free / Open-sourceExplore the academic literature as a visual graph of related papers

Free / Open-sourceAI research tools and expert publication services in one place
Free / Open-sourceAI research tools and expert publication services in one place

One prompt, fully cited academic drafts from your own sources
One prompt, fully cited academic drafts from your own sources
Free / Open-sourceAI-powered platform to read, write, and stay current with research
Free / Open-sourceAI-powered platform to read, write, and stay current with research