Aleph

Aleph is an investigative data platform for ingesting and indexing large collections of documents and structured datasets, making them searchable and easier to analyze. It is designed to help researchers find people, companies, and connections across many sources, including watchlists and prior research.

Key Features

• Ingests and indexes documents (such as PDF, Word, and HTML) and structured data (such as CSV and spreadsheets)
• Full-text search and browsing across datasets and uploaded materials
• Entity-centric exploration focused on people, companies, and other known entities
• Cross-referencing and matching entities against watchlists and reference datasets
• Supports operational workflows for managing data imports and collections

Use Cases

• Investigative journalism: search leaks, filings, and datasets for names and relationships
• OSINT research: unify and query diverse sources (documents plus tabular data)
• Compliance or due diligence research: check entities against internal or external lists

Limitations and Considerations

• The open-source version is in a sunsetting phase, with official maintenance planned to end after December 2025

Aleph is well-suited for teams that need to turn large, heterogeneous collections of files and tables into a searchable investigative corpus. Its emphasis on entity discovery and cross-referencing makes it particularly useful for research-driven analysis workflows.