Carrot2
Operator: Carrot Search, Poland
Automatically groups web search results, PubMed abstracts and your own text by topic.
Search Engines & Web Search
The public Workbench sends submitted text to the Carrot2 clustering server. According to the provider, it remains in memory there only while the calculation runs.
Product
Availability and source date
As of: 25 October 2026.
Check: 25 October 2026.
A public web search for open source intelligence and a PubMed search for malaria, followed by clustering.
The web search showed 111 results and relevant topic groups; PubMed showed 100 abstracts and its own medical topic groups.
Use in OSINT research
Provides a topic overview of search results and documents. Topic clusters help review larger result sets and discover relevant research terms.
Queries
| Input | Result | Result type |
|---|---|---|
| Keyword / free text | Web results or PubMed abstracts with automatically named topic groups. | Derived |
| Document / file | Topic clusters from your own text and document tables in the Clustering Workbench. | Derived |
Features
- Groups web results from eTools.ch or medical abstracts from PubMed.
- Names topic clusters and assigns matching documents.
- Shows topics as a list, treemap or pie chart.
- Provides Lingo, STC and k-means clustering methods.
- Processes files and content from Solr and Elasticsearch in the Workbench.
- Provides a Java library and a self-hostable REST server for your own applications.
Categories
- Search Engines & Web Search
- Search engines
Coverage
Dataset
Access
Installation and deployment
A public search demo, your own Java library installation or a self-hosted REST server.
Requirements
Export
Provider
Country of establishment
Interfaces
API
MCP
AI agents
Maintenance
Licence
Latest activity
Stars
Usage note
Legal note
Limitations
- Heavy use of eTools web search may require an agreement with its operator.
Guides and practical reports
Official · Carrot2: REST API Basics
Carrot Search · EN
Explains self-hosting, document input and JSON results.