An AI writing assistant that lets researchers decide — down to the sentence — what data leaves their machine.
Purpose-built for academic and professional research where confidentiality isn't optional.
Tag any section as sensitive. Preview the exact payload before it reaches an AI. Build a personal redaction list — Papyr masks terms automatically, including emails and IDs.
Section-based model — Abstract, Introduction, Methodology, Discussion — mirrors how research is actually written.
Rewrite, simplify, expand, summarize, check argument logic — all with configurable data exposure per action.
Import BibTeX sources, insert \cite{} references, and manage your bibliography without leaving the editor.
Documents stored locally and encrypted with Windows DPAPI. Nothing leaves your device unless you allow it.
Built in Rust with egui — no Electron, no browser engine. Instant startup, instant response, no 200MB overhead.
Most AI tools treat your data as fuel. Papyr treats it as yours. Choose how much context leaves your machine — per request.
No data is sent. AI actions run on locally-available models or are disabled. For NDA-protected material.
Sensitive terms and tagged sections are redacted before sending. You see the exact payload in the preview panel before confirming.
Full document sent for maximum AI accuracy. Use only when content is non-sensitive.
You see the exact payload — before you confirm.
Edit main.tex, manage your bibliography, compile PDFs, and catch errors — without switching apps.
Edit main.tex and references.bib with syntax awareness directly inside Papyr.
Parse citation keys, insert \cite{} and \ref{} references with autocomplete.
Compile with pdflatex, xelatex, lualatex, or latexmk. View diagnostics and error logs inline.
Detect missing packages, undefined references, and common LaTeX mistakes before you compile.
Install via Cargo or download the binary. No account, no cloud sign-up, no telemetry.
Add sections, write your draft, tag sensitive content, and import your BibTeX bibliography.
Choose Local, Safe Cloud, or Full Context per session. Preview the exact payload before any AI call.
Use AI actions to polish your prose, then compile to PDF with your local LaTeX toolchain.
Papyr is free, open source, and built to stay that way. Download and own your research workflow.
Get Papyr FreeRequires Rust · Windows (DPAPI vault) · Optional LaTeX toolchain
Windows 10 or 11 required for the encrypted vault (DPAPI).
Optional: MiKTeX or TeX Live for LaTeX PDF compilation.