Cahier

Cahier provides an integrated environment for collecting, reading, and synthesizing research materials. Users can import PDFs of books, articles, or any documents, organizing them with tables and folders that remain stored locally on the computer, allowing offline access. The built‑in PDF reader supports annotation and highlighting, and notes can be linked directly to specific passages.

The application emphasizes linking knowledge capture with development: passages sharing a common theme can be extracted from multiple sources, and notes can be rearranged via drag‑and‑drop to build a structured information repository. Quick search across bibliography metadata and a high‑density interface make navigation efficient on macOS.

Export capabilities include Markdown for notebooks and BibTeX for bibliographies, facilitating downstream writing and citation management. The tool targets researchers and diligent readers who need a single, native macOS app to manage and synthesize their reading workflow.