Side by side
Open Knowledge Maps vs PubMed
Both stand on research paper discovery tools. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan Web
Open Knowledge Maps offers a broad, visual way to explore research literature at no cost. Its 100-resource map limit and lack of collaboration or systematic-review tools should shape expectations.
Visit Open Knowledge Maps
Free plan APIWeb
PubMed offers broad literature search tools and citation access at no cost. Readers seeking article text may need to follow links to other sources, where access can require payment or a subscription.
Visit PubMedThe facts
| Open Knowledge Maps | PubMed | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Not published |
| Runs on | Web | API, Web |
| Lowest paid plan | Basic Membership — lower & middle income countries: €480 a year | Free or on request |
| Plans published | 9 | 1 |
| Maker | Not published | Not published |
| Website | openknowledgemaps.org | pubmed.ncbi.nlm.nih.gov |
| On research paper discovery tools | #19 of 33 | #15 of 33 |
Open Knowledge Maps: what it does well
- Free web access
- Visual topic grouping and concept labels
- Coverage of more than 400 million outputs
- Open-source software hosted on GitHub
- Custom Services can restrict data sources
What to know first
- Maps use only the top 100 resources
- Important resources may be missing
- No systematic review tools
- No collaboration features
PubMed: what it does well
- Free access to more than 40 million citations and abstracts
- Advanced search and citation-matching tools
- Filters include article type, language, age, and species
- Offers citation exports, email updates, and an API
What to know first
- Does not include full-text journal articles
- Linked full-text sites may require a fee or subscription
Alternatives to Open Knowledge Maps Alternatives to PubMed The whole list