
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. Trustguide.ai records 8,965 monthly visits with -13.9% growth and Free pricing.

AI summaries of customer reviews so you can judge a business at a glance
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | paperguide.ai | trustguide.ai |
| Pricing Model | Freemium | Free |
| Monthly Visits | 371.97K (371,972) | 8.97K (8,965) |
| MoM Traffic Delta | -11.05K (-2.9%) | -1.45K (-13.9%) |
| Primary Market & Share | 🇺🇸 United States (25.6%) | 🇺🇸 United States (48.9%) |
| Direct Visits / mo | 121.59K | 3.54K |
| User Rating | 4.4 | 3.7 |
| 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 summaries of customer reviews so you can judge a business at a glance
Condenses large volumes of customer reviews and public feedback into a short, readable digest instead of a wall of individual posts.
Surfaces the overall balance of positive and negative opinion so you can gauge whether sentiment is broadly favorable or divided.
Highlights the topics reviewers mention again and again — pricing, support, reliability, quality — rather than isolated one-off remarks.
Presents findings in a structure meant to support a purchasing or vendor decision rather than to entertain or promote.

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.

AI-moderated customer interviews that turn conversations into decisions
AI-moderated customer interviews that turn conversations into decisions
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 feedback capture that ties customer requests to revenue
Free AI Summarizer for text, articles, URLs and images
Free AI Summarizer for text, articles, URLs and images