
A free, AI-powered academic search engine for 240M+ papers across every scientific field
A 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. WisPaper records 107,817 monthly visits with +0.1% growth and Freemium pricing.

Screen thousands of papers down to the studies that matter
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | paperguide.ai | wispaper.ai |
| Pricing Model | Freemium | Freemium |
| Monthly Visits | 371.97K (371,972) | 107.82K (107,817) |
| MoM Traffic Delta | -11.05K (-2.9%) | +116 (+0.1%) |
| Primary Market & Share | 🇺🇸 United States (25.6%) | 🇨🇳 China (41.5%) |
| Direct Visits / mo | 121.59K | 30.49K |
| User Rating | 4.4 | 4.3 |
| 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.

Screen thousands of papers down to the studies that matter
Rapidly screen a large pool of candidate papers down to a small set of core studies, so you skip the reading you do not need to do.
Search academic literature by topic and get AI-ranked results that surface the most relevant work for your research question.
Follow research trends and see what is newly published from major journals and venues, so you stay current in your field.
Browse personalised AI Feeds that adapt to your interests and research area over time.

A free, AI-powered academic search engine for 240M+ papers across every scientific field
A free, AI-powered academic search engine for 240M+ papers across every scientific field

AI academic search engine for peer-reviewed science

AI research platform for reading, understanding and writing scientific papers
AI research platform for reading, understanding and writing scientific papers
AI 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.
AI-assisted systematic review software for screening, extraction, and evidence synthesis at scale
AI-assisted systematic review software for screening, extraction, and evidence synthesis at scale
AI answers grounded in 300M+ scholarly full texts
AI answers grounded in 300M+ scholarly full texts

Map the literature around the papers you love—free
Map the literature around the papers you love—free
Explore the academic literature as a visual graph of related papers
Explore the academic literature as a visual graph of related papers

AI research tools and expert publication services in one place
AI research tools and expert publication services in one place
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