Products

Software for thinking, researching AI answers, and working with public data. Explore the tools, inspect the code, and read the work behind them.

Thinking and writing

Walden

A quiet place to think with an AI assistant. Work through ideas in conversation, keep notes in your own words, and return to what you learned.

Self-hosted AI research

Compare what AI models say and which sources they cite. Run research across models and search modes through an open-source MCP and REST service.

Public tools and collaborations that make data easier to find, understand, and use.

With Public Environmental Data Partners

Search, preview, and download preserved U.S. infrastructure datasets through a public geospatial catalog.

Public data restoration

A restored interface to the preserved FEMA Future Risk Index datasets. Explore the published projections in an independently hosted tool.

With Humanitarian OpenStreetMap Team

An experimental API that suggests OpenStreetMap road tags from street-level images, with confidence values for a mapper to review.

Our articles are backed by working demos. Follow the code, sample inputs, results, and limitations in the public repositories.

We help teams turn difficult data and recurring questions into useful software.