Free · Open source · Yours forever

Your personal research assistant

Watson is the easiest way to collect, organise, annotate, cite and share the sources behind your work. Capture a reference from any web page with a single click, read and annotate PDFs, and generate citations in thousands of styles.

A full web library — collect, organise, cite and share your research from any browser.

My Library — Watson
Collections
Thesis
Methods
To read
important
HCI Lab
TitleYear
On the analytical engine1843
Compilers and reproducibility1952
Notes on annotation data2026
APA 7th Synced

Everything your research needs

Seven capabilities, one coherent workflow — from first discovery to finished bibliography.

Collect

Save references and full-text PDFs from any website with one click, or add items by DOI, ISBN, PMID and arXiv ID.

Organise

Sort your library into nested collections, colour-coded tags and saved searches. Find duplicates and merge them cleanly.

Read & Annotate

A built-in reader for PDF, EPUB and web snapshots. Highlight, underline, draw and comment — every annotation is first-class, syncable data.

Cite

Cite as you write in Word, LibreOffice and Google Docs, with more than ten thousand citation styles to choose from.

Sync

Your library stays in step across every device, online and offline. Data sync is always free and unlimited.

Collaborate

Create group libraries to share references with a class, a lab or the whole world, with fine-grained permissions.

Extend

A public API, a streaming service and a plugin framework let you build on top of your library however you like.

10,000+
Citation styles
600+
Site connectors
20,000
Public groups
100%
Data sync, always free

Start building your library today

Create a free account to sync your research across devices, join groups and publish your work.

Create a free account