Free · Browser-based · Privacy-first

Outbreak investigation data, cleaned and analyzed in your browser

LineList is a guided toolkit for reviewing, cleaning, analyzing, mapping, and visualizing line-list data. Built for field epidemiologists who need answers, not code.

Launch LineList → Explore features

No sign-up. No installation. Your data never leave your browser.

Everything you need for a line-list analysis

From messy spreadsheet to publication-ready figures, without leaving the page.

Import CSV & Excel

Bring in data with worksheet selection and smart date-format handling, or paste straight from a spreadsheet.

Review & clean

Data-quality checks, line-list editing, derived variables, and a full edit history you can audit and export.

Epidemic curves

Build epi curves with stratification, annotations, and incubation-period overlays in a few clicks.

Maps

Spot maps, area (choropleth) maps, and freehand sketch maps for transmission scenarios and field settings.

Statistics & 2×2

Descriptive stats, frequency tables, cross-tabulations, and 2×2 analysis with the measures epidemiologists expect.

Chart gallery & exports

A publication-oriented gallery (bar, dot, forest, slope, waffle and more) with clean image exports.

Training datasets & tutorials

Synthetic outbreak datasets and embedded, step-by-step tutorials to learn each tool as you go.

Portable projects

Export a whole project to a single file and import it on another device. A simple, cloud-free backup.

Locale & accessibility

Configurable number and date formats plus accessibility controls for diverse teams and settings.

Three steps, start to finish

A guided workflow that mirrors how an investigation actually unfolds.

Import

Load your CSV or Excel line list, or start from a built-in training dataset to explore first.

Clean & analyze

Run quality checks, fix records, derive variables, then compute curves, tables, and 2×2 measures.

Visualize & export

Map cases, build publication-ready charts, and export figures and a portable project file.

Built for the people doing the fieldwork

LineList assumes epidemiological judgment, not programming skill.

FETP residents Junior epidemiologists Outbreak investigators Public health students Surveillance officers Instructors & trainers

Your data stay in your browser

Imported datasets are processed locally and saved only in your browser's storage. LineList does not upload your data to an application server or offer cloud dataset storage. Map tiles and other externally hosted resources generate normal network requests.

Do not import protected health information or direct identifiers. De-identify datasets and follow your organization's policies before use.